Helium Compounds at High Pressure ✉ ✉ Jingming Shi 1, Wenwen Cui 1, Jian Hao1,2, Meiling Xu1, Xianlong Wang 3 & Yinwei Li 1
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Primordial Hydrogen-Helium Degassing, an Overlooked Major Energy Source for Internal Terrestrial Processes
HAIT Journal of Science and Engineering B, Volume 2, Issues 1-2, pp. 125-167 Copyright C 2005 Holon Academic Institute of Technology ° Primordial hydrogen-helium degassing, an overlooked major energy source for internal terrestrial processes 1, 2 Arie Gilat ∗ and Alexander Vol 1Geological Survey of Israel (ret.), 8 Yehoash St., Jerusalem 93152, Israel 2Enlightment Ltd. 33 David Pinsky St., Haifa 34454, Israel ∗Corresponding author: [email protected] Received 20 July 2004, revised 3 February 2005, accepted 16 February 2005 Abstract The currently accepted theories concerning terrestrial processes are lacking in accounting for a source of internal energy which: (a) are quickly focused, e.g. earthquakes and volcanic eruptions; (b) are of very high density; (c) provide very high velocities of energy re- lease; (d) have very high density of the energy transport and relatively small losses during transportation over long distances; (e) are quasi- constantly released and practically limitless. This energy release is always accompanied by H- and He-degassing. Solid solutions of H and He, and compounds of He with H, O, Si and metals were discovered in laboratory experiments of ultra-high PT-conditions; He-S, He-Cl, He- C, He-N structures can be deduced from their atomic structure and compositions of natural He-reach gases. Ultra-high PT-conditions ex- ist in the Earth’s interior; hence it seems most likely that some “exotic” compounds are present in the Earth’s core and mantle. During Earth’s accretion, primordial hydrogen and helium were trapped and stored in the planet interior as H- and He- solutions and compounds, stable only under ultrahigh PT-conditions that were dis- covered in recent experiments. -
Phosphine and Ammonia Photochemistry in Jupiter's
40th Lunar and Planetary Science Conference (2009) 1201.pdf PHOSPHINE AND AMMONIA PHOTOCHEMISTRY IN JUPITER’S TROPOSPHERE. C. Visscher1, A. D. Sperier2, J. I. Moses1, and T.C. Keane3. 1Lunar and Planetary Institute, USRA, 3600 Bay Area Blvd., Houston, TX 77058-1113 2Baylor University, Waco, TX 76798, 3Department of Chemistry and Physics, The Sage Colleges, Troy, NY 12180, ([email protected], [email protected]) Introduction: The last comprehensive photo- tions involving the amino radical (NH2) play a larger chemical model for Jupiter’s troposphere was pre- role. We note that this is the first photochemical sented by Edgington et al. [1,2], based upon the work model to include P2H as an intermediate species in PH3 of Atreya et al. [3] and Kaye and Strobel [4-6]. Since photolysis. The equivalent N2Hx species are believed these early studies, numerous laboratory experiments to be important in the combustion chemistry of nitro- have led to an improvement in our understanding of gen compounds [15]. PH3, NH3-PH3, and NH3-C2H2 photochemistry [7-13]. Furthermore, recent Galileo, Cassini, and Earth-based observations have better defined the abundance of key atmospheric constituents as a function of altitude and latitude in Jupiter’s troposphere. These new results provide an opportunity to test and improve theoretical models of Jovian atmospheric chemistry. We have therefore developed a photochemical model for Jupi- ter’s troposphere considering the updated experimental and observational constraints. Using the Caltech/JPL KINETICS code [14] for our photochemical models, our basic approach is two- fold. The validity of our selected chemical reaction list is first tested by simulating the laboratory experiments of PH3, NH3-PH3, and NH3-C2H2 photolysis with pho- tochemical “box” models. -
Ammonia As a Refrigerant
1791 Tullie Circle, NE. Atlanta, Georgia 30329-2305, USA www.ashrae.org ASHRAE Position Document on Ammonia as a Refrigerant Approved by ASHRAE Board of Directors February 1, 2017 Expires February 1, 2020 ASHRAE S H A P I N G T O M O R R O W ’ S B U I L T E N V I R O N M E N T T O D A Y © 2017 ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAE’s prior written permission. COMMITTEE ROSTER The ASHRAE Position Document on “Ammonia as a Refrigerant” was developed by the Society’s Refrigeration Committee. Position Document Committee formed on January 8, 2016 with Dave Rule as its chair. Dave Rule, Chair Georgi Kazachki IIAR Dayton Phoenix Group Alexandria, VA, USA Dayton, OH, USA Ray Cole Richard Royal Axiom Engineers, Inc. Walmart Monterey, CA, USA Bentonville, Arkansas, USA Dan Dettmers Greg Scrivener IRC, University of Wisconsin Cold Dynamics Madison, WI, USA Meadow Lake, SK, Canada Derek Hamilton Azane Inc. San Francisco, CA, USA Other contributors: M. Kent Anderson Caleb Nelson Consultant Azane, Inc. Bethesda, MD, USA Missoula, MT, USA Cognizant Committees The chairperson of Refrigerant Committee also served as ex-officio members: Karim Amrane REF Committee AHRI Bethesda, MD, USA i © 2017 ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAE’s prior written permission. HISTORY of REVISION / REAFFIRMATION / WITHDRAWAL -
Safer Cocktail for an Ethanol/Water/Ammonia Solvent
L A S C P LSC in Practice C P O C L Safer Cocktail for an Ethanol/Water/ K T I A I C Ammonia Solvent Mixture L S A Problem T A laboratory had been under pressure to move towards Using this mixture, the sample uptake capacity of I the newer generation of safer liquid scintillation ULTIMA-Flo AP, ULTIMA-Flo M and ULTIMA Gold O cocktails. Unfortunately, the sample composition of LLT (PerkinElmer 6013599, 6013579 and 6013377, one of their targets kept giving the researchers problems. respectively) at 20 °C was determined and N Before the lead researcher contacted PerkinElmer, the results were: they had tried PerkinElmer’s Opti-Fluor®, ULTIMA ULTIMA-Flo AP 4.00 mL in 10 mL cocktail N Gold LLT, and ULTIMA Gold XR. All of the safer O ™ ULTIMA-Flo M 4.25 mL in 10 mL cocktail cocktails could incorporate each of the constituents T as indicated by their sample capacity graphs. ULTIMA Gold LLT 4.25 mL in 10 mL cocktail E The problematic sample was an extraction solvent From these results, we observed that it was possible consisting of 900 mL ethanol, 50 mL ammonium to get 4.0 mL of the sample into all of these cocktails. hydroxide, 500 mL water and an enzyme containing In addition, we determined that it was not possible to 14C. The mixture had a pH in the range of 10 to 11. get 4 mL sample into 7 mL of any of these cocktails. To complete this work, we also checked for lumines- Discussion cence using 4 mL of sample in 10 mL of each cocktail. -
Improving the Efficiency of Ammonia Electrolysis for Hydrogen Production
Improving The Efficiency Of Ammonia Electrolysis For Hydrogen Production A dissertation presented to the faculty of the Russ College of Engineering and Technology of Ohio University In partial fulfillment of the requirements for the degree Doctor of Philosophy Ramasamy Palaniappan December 2013 © 2013 Ramasamy Palaniappan. All Rights Reserved. 2 This dissertation titled Improving the Efficiency of Ammonia Electrolysis for Hydrogen Production by RAMASAMY PALANIAPPAN has been approved for the Department of Chemical and Biomolecular Engineering and the Russ College of Engineering and Technology by Gerardine G. Botte Professor of Chemical and Biomolecular Engineering Dennis Irwin Dean, Russ College of Engineering and Technology 3 ABSTRACT PALANIAPPAN, RAMASAMY, Ph.D., December 2013, Chemical Engineering Improving the Efficiency of Ammonia Electrolysis for Hydrogen Production Director of Dissertation: Gerardine G. Botte Given the abundance of ammonia in domestic and industrial wastes, ammonia electrolysis is a promising technology for remediation and distributed power generation in a clean and safe manner. Efficiency has been identified as one of the key issues that require improvement in order for the technology to enter the market phase. Therefore, this research was performed with the aim of improving the efficiency of hydrogen production by finding alternative materials for the cathode and electrolyte. 1. In the presence of ammonia the activity for hydrogen evolution reaction (HER) followed the trend Rh>Pt>Ru>Ni. The addition of ammonia resulted in lower rates for HER for Pt, Ru, and Ni, which have been attributed to competition from the ammonia adsorption reaction. 2. The addition of ammonia offers insight into the role of metal-hydrogen underpotential deposition (M-Hupd) on HER kinetics. -
Cellulosic Ethanol Production Via Aqueous Ammonia Soaking Pretreatment and Simultaneous Saccharification and Fermentation Asli Isci Iowa State University
Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 2008 Cellulosic ethanol production via aqueous ammonia soaking pretreatment and simultaneous saccharification and fermentation Asli Isci Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Agriculture Commons, and the Bioresource and Agricultural Engineering Commons Recommended Citation Isci, Asli, "Cellulosic ethanol production via aqueous ammonia soaking pretreatment and simultaneous saccharification and fermentation" (2008). Retrospective Theses and Dissertations. 15695. https://lib.dr.iastate.edu/rtd/15695 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. Cellulosic ethanol production via aqueous ammonia soaking pretreatment and simultaneous saccharification and fermentation by Asli Isci A dissertation submitted to the graduate faculty in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Co-majors: Agricultural and Biosystems Engineering; Biorenewable Resources and Technology Program of Study Committee: Robert P. Anex, Major Professor D. Raj Raman Anthony L. Pometto III. Kenneth J. Moore Robert C. Brown Iowa State University Ames, Iowa -
Algorithmic Analysis of Chemical Dynamics of the Autoignition of NH3–H2O2/Air Mixtures
energies Article Algorithmic Analysis of Chemical Dynamics of the Autoignition of NH3–H2O2/Air Mixtures Ahmed T. Khalil 1,2, Dimitris M. Manias 3, Efstathios-Al. Tingas 4, Dimitrios C. Kyritsis 1,2,* and Dimitris A. Goussis 1,2 1 Department of Mechanical Engineering, Khalifa University of Science and Technology, Abu Dhabi 127788, UAE; [email protected] (A.T.K.); [email protected] (D.A.G.) 2 Research and Innovation Center on CO2 and H2 (RICH), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, UAE 3 Department of Mechanics, School of Applied Mathematics and Physical Sciences, National Technical University of Athens, 157 73 Athens, Greece; [email protected] 4 Perth College, University of the Highlands and Islands, (UHI), Perth PH1 2NX, UK; [email protected] * Correspondence: [email protected] Received: 8 September 2019; Accepted: 7 October 2019; Published: 21 November 2019 Abstract: The dynamics of a homogeneous adiabatic autoignition of an ammonia/air mixture at constant volume was studied, using the algorithmic tools of Computational Singular Perturbation. Since ammonia combustion is characterized by both unrealistically long ignition delays and elevated NOx emissions, the time frame of action of the modes that are responsible for ignition was analyzed by calculating the developing time scales throughout the process and by studying their possible relation to NOx emissions. The reactions that support or oppose the explosive time scale were identified, along with the variables that are related the most to the dynamics that drive the system to an explosion. -
AZMAN AIR CLASSES DANGEROUS GOODS 'Dangerous Goods' Are
AZMAN AIR CLASSES DANGEROUS GOODS ‘Dangerous goods’ are materials or items with hazardous properties Commonly Transported Explosives which, if not properly controlled, 1. Ammunition/cartridges present a potential hazard to human 2. Fireworks/pyrotechnics health and safety, infrastructure and/ 3. Flares or their means of transport. 4. Blasting caps / detonators 5. Fuse The transportation of dangerous 6. Primers goods is controlled and governed by a 7. Explosive charges (blasting, variety of different regulatory demolition etc) regimes, operating at both the 8. Detonating cord national and international levels. 9. Air bag inflators Prominent regulatory frameworks for 10. Igniters the transportation of dangerous 11. Rockets goods include the United Nations 12. TNT / TNT compositions Recommendations on the Transport 13. RDX / RDX compositions of Dangerous Goods, ICAO’s Technical 14. PETN / PETN compositions Instructions, IATA’s Dangerous Goods Regulations and the IMO’s International Maritime Dangerous Commonly Transported Gases Goods Code. Collectively, these 1. Aerosols regulatory regimes mandate how 2. Compressed air dangerous goods are to be handled, 3. Hydrocarbon gas-powered packaged, labelled and transported. devices 1. Explosives 4. Fire extinguishers 2. Gases 5. Gas cartridges 3. Flammable Liquids 6. Fertilizer ammoniating 4. Flammable Solids solution 5. Oxidizing Substances 7. Insecticide gases 6. Toxic & Infectious Substances 8. Refrigerant gases 7. Radioactive Material 9. Lighters 8. Corrosives 10. Acetylene / Oxyacetylene 9. Miscellaneous Dangerous 11. Carbon dioxide Goods 12. Helium / helium compounds 13. Hydrogen / hydrogen compounds 14. Oxygen / oxygen 21. Organochlorine pesticides compounds 22. Organophosphorus 15. Nitrogen / nitrogen pesticides compounds 23. Copper based pesticides 16. Natural gas 24. Esters 17. Oil gas 25. Ethers 18. -
BENZENE Disclaimer
United States Office of Air Quality EPA-454/R-98-011 Environmental Protection Planning And Standards June 1998 Agency Research Triangle Park, NC 27711 AIR EPA LOCATING AND ESTIMATING AIR EMISSIONS FROM SOURCES OF BENZENE Disclaimer This report has been reviewed by the Office of Air Quality Planning and Standards, U.S. Environmental Protection Agency, and has been approved for publication. Mention of trade names and commercial products does not constitute endorsement or recommendation of use. EPA-454/R-98-011 ii TABLE OF CONTENTS Section Page LIST OF TABLES.....................................................x LIST OF FIGURES.................................................. xvi EXECUTIVE SUMMARY.............................................xx 1.0 PURPOSE OF DOCUMENT .......................................... 1-1 2.0 OVERVIEW OF DOCUMENT CONTENTS.............................. 2-1 3.0 BACKGROUND INFORMATION ...................................... 3-1 3.1 NATURE OF POLLUTANT..................................... 3-1 3.2 OVERVIEW OF PRODUCTION AND USE ......................... 3-4 3.3 OVERVIEW OF EMISSIONS.................................... 3-8 4.0 EMISSIONS FROM BENZENE PRODUCTION ........................... 4-1 4.1 CATALYTIC REFORMING/SEPARATION PROCESS................ 4-7 4.1.1 Process Description for Catalytic Reforming/Separation........... 4-7 4.1.2 Benzene Emissions from Catalytic Reforming/Separation .......... 4-9 4.2 TOLUENE DEALKYLATION AND TOLUENE DISPROPORTIONATION PROCESS ............................ 4-11 4.2.1 Toluene Dealkylation -
Business of the City Council City of Mercer Island, Wa
AB 5444 BUSINESS OF THE CITY COUNCIL July 17, 2018 CITY OF MERCER ISLAND, WA Study Session REVIEW RFQ CRITERIA FOR TRANSIT Action: Discussion Only COMMUTER PARKING AND A PUBLIC- Review proposed RFQ criteria and Action Needed: PRIVATE, MIXED-USE DEVELOPMENT selection process. Motion Ordinance PROJECT ON THE TULLY’S/PARCEL 12 Resolution SITE DEPARTMENT OF City Manager (Julie Underwood) COUNCIL LIAISON n/a EXHIBITS 1. Request For Qualifications (RFQ) - Mercer Island Commuter Parking & Town Center Mixed-Use Project 2018-2019 CITY COUNCIL GOAL 1. Prepare for Light Rail/Improve Mobility APPROVED BY CITY MANAGER AMOUNT OF EXPENDITURE $ n/a AMOUNT BUDGETED $ n/a APPROPRIATION REQUIRED $ n/a SUMMARY At its meeting on June 5, the City Council authorized the City Manager to execute a Purchase and Sale Agreement with the Parkway Management Group, et al. to acquire the former Tully’s property, located at 7810 SE 27th Street (see AB 5434). This property will be combined with a portion of adjacent land the City already owns at Sunset Highway, known as Parcel 12. These properties could be developed through a public-private partnership to build an underground, transit commuter parking facility and potential mixed-use development (see AB 5418). The April 2018 Citizen Survey (see AB 5440) showed that 59% of respondents were unsatisfied with the availability of commuter parking, and the majority of respondents selected commuter parking as their top transportation priority. This public-private partnership presents an opportunity to provide much-needed commuter parking in Town Center, while significantly reducing the City’s contribution of funds (other than the Sound Transit contribution) by utilizing City-owned land in a key geographic location near the future East Link light rail station. -
First Experimental Evidence for Superionic Ice 6 February 2018
First experimental evidence for superionic ice 6 February 2018 In a paper published today by Nature Physics, a research team from Lawrence Livermore National Laboratory (LLNL), the University of California, Berkeley and the University of Rochester provides experimental evidence for superionic conduction in water ice at planetary interior conditions, verifying the 30-year-old prediction. Using shock compression, the team identified thermodynamic signatures showing that ice melts near 5000 Kelvin (K) at 200 gigapascals (GPa—2 million times Earth's atmosphere)—4000 K higher than the melting point at 0.5 megabar (Mbar) and almost the surface temperature of the sun. Time-integrated image of a laser-driven shock compression experiment to recreate planetary interior conditions and study the properties of superionic water. "Our experiments have verified the two main Credit: M. Millot/E. Kowaluk/J.Wickboldt/LLNL/LLE/NIF predictions for superionic ice: very high protonic/ionic conductivity within the solid and high melting point," said lead author Marius Millot, a physicist at LLNL. "Our work provides experimental Among the many discoveries on matter at high evidence for superionic ice and shows that these pressure that garnered him the Nobel Prize in predictions were not due to artifacts in the 1946, scientist Percy Bridgman discovered five simulations, but actually captured the extraordinary different crystalline forms of water ice, ushering in behavior of water at those conditions. This provides more than 100 years of research into how ice an important validation of state-of-the-art quantum behaves under extreme conditions. simulations using density-functional-theory-based molecular dynamics (DFT-MD)." One of the most intriguing properties of water is that it may become superionic when heated to "Driven by the increase in computing resources several thousand degrees at high pressure, similar available, I feel we have reached a turning point," to the conditions inside giant planets like Uranus added Sebastien Hamel, LLNL physicist and co- and Neptune. -
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International Journal of Current Advanced Research ISSN: O: 2319-6475, ISSN: P: 2319-6505, Impact Factor: 6.614 Available Online at www.journalijcar.org Volume 7; Issue 6(I); June 2018; Page No. 13658-13661 DOI: http://dx.doi.org/10.24327/ijcar.2018.13661.2450 Research Article FLUORIDE INCIDENCE IN GROUNDWATER AND ITS POTENTIAL HEALTH EFFECTS IN PARTS OF BILASPURAREA, CHHATTISGARH, INDIA Manish Upadhyay and Raman C.V University Kargi Road, Kota Bilaspur (C.G) ARTICLE INFO ABSTRACT Article History: Although fluoride was once considered an essential nutrient, the U.S. National Research Council has since removed this designation due to the lack of studies showing it is essential Received 20th March, 2018 th for human growth, though still considering fluoride a "beneficial element" due to its Received in revised form 27 positive impact on oral health. The U.S. specifies the optimal level of fluoride to range April, 2018 Accepted 5th May, 2018 th from 0.7 to 1.2 mg/L (milligrams per liter, equivalent to parts per million), depending on Published online 28 June, 2018 the average maximum daily air temperature; the optimal level is lower in warmer climates, where people drink more water, and is higher in cooler climates.High concentrations of Key words: fluoride (F-) in drinking water are harmful to human health.This communication reports F- incidence in groundwaterand its relation with the prevalence of dental and skeletal Climate, dosage, fluorosis,permissible fluorosisin Sarguja , Chhattisgarh,India. In 1994 a World Health Organization expert limit,consumption. committee on fluoride use stated that 1.0 mg/L should be an absolute upper bound, even in cold climates, and that 0.5 mg/L may be an appropriate lower limit A 2007 Australian systematic review recommended a range from 0.6 to 1.1 mg/L Assayof fluoride concentration in ground water samples around in some parts of Bilaspur revealed that fluoride content in beyond the permissible limit in a some residential areas.