Summaries of FY 1991 Research in the Chemical Sciences
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United States Patent (19) 11) 4,282,163 Suzuki Et Al
United States Patent (19) 11) 4,282,163 Suzuki et al. 45) Aug. 4, 1981 (54) METHOD OF PRODUCING (56) References Cited HYDROGENATED FATTY ACIDS U.S. PATENT DOCUMENTS 1,247,516 11/1917 Ellis ...................................... 260/409 75 Inventors: Masao Suzuki, Nishinomiya; Takeshi 1927,850 9/1933 Schellmann et al. ................ 260/409 Matsuo; Naomichi Yamada, both of 2,862,943 12/1958 Wheeler ............................... 260/419 Amagasaki, all of Japan 3,197,418 7/1965 Maebashi ... 260/409 3,896,053 7/1975 Broecker et al. 260/409 4,163,750 8/1979 Bird et al. ............................ 260/409 73) Assignee: Nippon Oil and Fats Co., Ltd., Japan 4,179,454 12/1979 Mehta et al. ......................... 260/409 Primary Examiner-John F. Niebling (21) Appl. No.: 102,533 Attorney, Agent, or Firm-Stevens, Davis, Miller & Mosher 22 Filed: Dec. 11, 1979 57 ABSTRACT Hydrogenated fatty acid having excellent color and 30 Foreign Application Priority Data stability can be obtained by hydrogenating fatty acid, oil or fat, and distilling the crude hydrogenated fatty Dec. 19, 1978 JP Japan ................................ 53-157101 acid; or splitting the hydrogenated oil or fat into crude hydrogenated fatty acid and distilling the crude 51) Int. Cl.............................. .................. C11C3/12 hydrogenated fatty acid. 52) U.S. Cl. ..................................... 260/409; 260/419 58 Field of Search ................................ 260/409, 419 10 Claims, No Drawings 4,282,163 2 and acid oils formed as a by-product in the purification -
Rare Earth Pincer Complexes: Synthesis, Reaction Chemistry, and Catalysis
Top Organomet Chem (2016) 54: 93–178 DOI: 10.1007/3418_2015_120 # Springer International Publishing Switzerland 2015 Published online: 21 June 2015 Rare Earth Pincer Complexes: Synthesis, Reaction Chemistry, and Catalysis Mikko M. Ha¨nninen, Matthew T. Zamora, and Paul G. Hayes Abstract The research field surrounding rare earth pincer complexes has reached a stage where a comprehensive review about the reactivity and catalytic behavior of these species is justified. In this contribution, we begin with a brief introduction on common strategies for the preparation of rare earth pincer complexes, continuing with a section devoted to the versatile reactivity observed for this class of com- pound. Thereafter, several types of compounds are discussed, including extremely reactive hydrides, cationic species, and intriguing scandium imido complexes. Finally, the last portion of this chapter sums up the hitherto reported catalytic studies, including discussions on ring-opening polymerization of cyclic esters, polymerization of olefins and hydroamination reactions, as well as several exam- ples of more infrequently encountered catalytic processes. Keywords Catalysis Á Lanthanides Á Pincer ligands Á Rare earth metals Á Reactivity Contents 1 Introduction .................................................................................. 94 2 Preparation of Rare Earth Complexes Supported by Pincer Ligands ..................... 95 2.1 Common Synthetic Routes to Rare Earth Pincer Complexes ....................... 95 2.2 Reactions of Metal Complexes That -
ACTIVATION of N-HEXANE USING VANADIUM-EXCHANGED ZEOLITES by THIRUSHA NAICKER
ACTIVATION OF n-HEXANE USING VANADIUM-EXCHANGED ZEOLITES BY THIRUSHA NAICKER Submitted in fulfilment of the academic requirements for the degree of Doctor of Philosophy in the School of Chemistry, University of KwaZulu-Natal, Durban July 2010 As the candidate’s supervisor I have/have not approved this thesis/dissertation for submission Signed: _______________ Name: _______________ Date: __________ DEDICATION To my dad and mum, I love you lots. ii ABSTRACT The influence of the form of the ZSM-5 zeolite, vanadium content and the elimination of the exterior surface acidity on the activity and selectivity of n-hexane oxidation was studied using a fixed bed reactor. Blank reactor studies (carborundum packed reactor) showed no conversion below 450°C with the highest conversion (8%) at 500°C. The dominant products were found to be carbon oxides (Sel./% = 90) with minor selectivities to the hexene isomers (7%) and the remainder being cracked products, THF and benzene. H-ZSM-5 with different SiO2/Al2O3 ratios (100 and 320) and Na-ZSM-5 (SiO2/Al2O3 ratio of 100) were tested under non-oxidative and oxidative conditions. Under oxidative conditions as the ratio of the SiO2/Al2O3 increased, the aluminium content decreased and so too did the cracking ability of the zeolite (i.e. yield of cracked products dropped from 36% to 8%). However, the use of the Na- form of ZSM-5 completely eliminated acid cracking. Under oxidative conditions H-ZSM-5 (100) was found to be more active and resulted in higher formation of cyclic and aromatic compounds. With increasing time on-stream and higher temperatures the catalyst was found to deactivate. -
Paraffin Oxidation Studies
International Journal of Engineering Innovation & Research Volume 2, Issue 1, ISSN: 2277 – 5668 Paraffin Oxidation Studies Mrs. S. J. Purohit, Dr. Milind Pradhan Prof. Purohit S. J. is a Research Scholar at Bhagwant University & Working at Thadomal Shahani Engg. College, Bandra Mumbai-50. Email:[email protected] Abstract – The oxidation of paraffin has been studied with Many processes were developed to manufacture fatty keen interest by several workers from all over the world; as acids of various molecular weights. The manufacture of oxidation leads to the introduction of various functional higher fatty alcohols; which have potential uses as starting groups in hydrocarbon chains. Processes involving the material for the manufacturing of lubricating oil, additives, Oxidation of Paraffin’s in the liquid phase, using air or synthetic lubricating oil, plasticizers and others. A more oxygen are of great importance to industrialized economies because of their role in converting petroleum hydrocarbon selective process for the oxidation of paraffin to alcohols feed stocks such as alkanes, olefins and aromatics into has been conducted by Bashkirov , khim and co workers; industrial organic chemicals important in the polymer, who conducted the reaction in the presence of Boric acid. petrochemicals ,cosmetics and detergent industries. The alcohols are stabilized in the form of their esters; The oxidation leads predominantly to the formation of which are resistant to further oxidation and hence very secondary alcohols consisting of a mixture of all possible high selectivity is achieved.[2,3] isomers with the same number of carbon atoms in the Paraffin oxidation mechanism molecules as the initial hydrocarbons. The secondary 1st stage alcohols which are oxidation products of paraffin exhibit excellent hydrolytic, oxidative and color stability, because of Hydrocarbon → Hydro peroxide the nature of their branching. -
Molecular Catalysis of Rare-Earth Elements
Structure and Bonding 137 Molecular Catalysis of Rare-Earth Elements Bearbeitet von Peter W Roesky 1. Auflage 2010. Buch. xiii, 250 S. Hardcover ISBN 978 3 642 12810 3 Format (B x L): 15,5 x 23,5 cm Gewicht: 532 g Weitere Fachgebiete > Chemie, Biowissenschaften, Agrarwissenschaften > Physikalische Chemie > Katalyse, Kinetik Heterogener Reaktionen Zu Inhaltsverzeichnis schnell und portofrei erhältlich bei Die Online-Fachbuchhandlung beck-shop.de ist spezialisiert auf Fachbücher, insbesondere Recht, Steuern und Wirtschaft. Im Sortiment finden Sie alle Medien (Bücher, Zeitschriften, CDs, eBooks, etc.) aller Verlage. Ergänzt wird das Programm durch Services wie Neuerscheinungsdienst oder Zusammenstellungen von Büchern zu Sonderpreisen. Der Shop führt mehr als 8 Millionen Produkte. Struct Bond (2010) 137: 49–108 DOI:10.1007/430 2010 16 c Springer-Verlag Berlin Heidelberg 2010 Published online: 11 May 2010 Polymerization of 1,3-Conjugated Dienes with Rare-Earth Metal Precursors Zhichao Zhang, Dongmei Cui, Baoli Wang, Bo Liu, and Yi Yang Abstract This chapter surveys the publications except patents related to cis-1,4-, trans-1,4-, 3,4-regio-, and stereoselective polymerizations of 1,3-conjugated dienes with rare-earth metal-based catalytic systems during the past decade from 1999 to 2009. The concerned catalyst systems are classified into the conventional Ziegler– Natta catalysts, the modified Ziegler–Natta catalysts, and the single-site cationic systems composed of lanthanocene and noncyclopentadienyl precursors, respec- tively. For the conventional Ziegler–Natta catalysts of the most promising indus- try applicable recipe, the multicomponents based on lanthanide carboxylate or phosphate or alkoxide precursors, research works concern mainly about optimiz- ing the catalyst preparation and polymerization techniques. -
Oxidation Stability of Fuels in Liquid Phase Karl Chatelain
Oxidation stability of fuels in liquid phase Karl Chatelain To cite this version: Karl Chatelain. Oxidation stability of fuels in liquid phase. Chemical engineering. Université Paris- Saclay, 2016. English. NNT : 2016SACLY020. tel-01958391 HAL Id: tel-01958391 https://pastel.archives-ouvertes.fr/tel-01958391 Submitted on 18 Dec 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. NNT : 2016SACLY020 THÈSE DE DOCTORAT DE L’UNIVERSITE PARIS-SACLAY préparée à L’ENSTA ParisTech ÉCOLE DOCTORALE N±579 Sciences Mécaniques et Énergétiques, Matériaux et Géosciences (SMEMAG) Spécialité de doctorat : Génie des procédés par Karl CHATELAIN Etude de la stabilité à l’oxydation des carburants en phase liquide Thèse présentée et soutenue à Rueil-Malmaison, le 15 décembre 2016 Composition du jury : Dr. André NICOLLE Président IFP Energies nouvelles, R102 Pr. Richard WEST Rapporteur Northeastern University, Boston, CoMoChEng Pr. Pierre-Alexandre GLAUDE Rapporteur CNRS Nancy, LRGP Dr. Mickael SICARD Examinateur ONERA, DEFA Dr. Thomas DUBOIS Examinateur TOTAL ACS Dr. Laurie STARCK Examinateur IFP Energies nouvelles, R104 Mme. Arij BEN AMARA Examinateur IFP Energies nouvelles, R104 Pr. Laurent CATOIRE Directeur de Thèse ENSTA ParisTech, Université Paris-Saclay, UCP ii Acknowledgements This work was made possible thanks to the support of the IFP Energies nouvelles (IFPEN) and the chemical engineering laboratory (UCP) of the ENSTA ParisTech, Université Paris-Saclay. -
Principles of Chemical Nomenclature a GUIDE to IUPAC RECOMMENDATIONS Principles of Chemical Nomenclature a GUIDE to IUPAC RECOMMENDATIONS
Principles of Chemical Nomenclature A GUIDE TO IUPAC RECOMMENDATIONS Principles of Chemical Nomenclature A GUIDE TO IUPAC RECOMMENDATIONS G.J. LEIGH OBE TheSchool of Chemistry, Physics and Environmental Science, University of Sussex, Brighton, UK H.A. FAVRE Université de Montréal Montréal, Canada W.V. METANOMSKI Chemical Abstracts Service Columbus, Ohio, USA Edited by G.J. Leigh b Blackwell Science © 1998 by DISTRIBUTORS BlackweilScience Ltd Marston Book Services Ltd Editorial Offices: P0 Box 269 Osney Mead, Oxford 0X2 0EL Abingdon 25 John Street, London WC1N 2BL Oxon 0X14 4YN 23 Ainslie Place, Edinburgh EH3 6AJ (Orders:Tel:01235 465500 350 Main Street, Maiden Fax: MA 02 148-5018, USA 01235 465555) 54 University Street, Carlton USA Victoria 3053, Australia BlackwellScience, Inc. 10, Rue Casmir Delavigne Commerce Place 75006 Paris, France 350 Main Street Malden, MA 02 148-5018 Other Editorial Offices: (Orders:Tel:800 759 6102 Blackwell Wissenschafts-Verlag GmbH 781 388 8250 KurfUrstendamm 57 Fax:781 388 8255) 10707 Berlin, Germany Canada Blackwell Science KK Copp Clark Professional MG Kodenmacho Building 200Adelaide St West, 3rd Floor 7—10 Kodenmacho Nihombashi Toronto, Ontario M5H 1W7 Chuo-ku, Tokyo 104, Japan (Orders:Tel:416 597-1616 800 815-9417 All rights reserved. No part of Fax:416 597-1617) this publication may be reproduced, stored in a retrieval system, or Australia BlackwellScience Pty Ltd transmitted, in any form or by any 54 University Street means, electronic, mechanical, Carlton, Victoria 3053 photocopying, recording or otherwise, (Orders:Tel:39347 0300 except as permitted by the UK Fax:3 9347 5001) Copyright, Designs and Patents Act 1988, without the prior permission of the copyright owner. -
Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)
NOMENCLATURE OF INORGANIC CHEMISTRY IUPAC Recommendations 2005 IUPAC Periodic Table of the Elements 118 1 2 21314151617 H He 3 4 5 6 7 8 9 10 Li Be B C N O F Ne 11 12 13 14 15 16 17 18 3456 78910 11 12 Na Mg Al Si P S Cl Ar 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 55 56 * 57− 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 Cs Ba lanthanoids Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 87 88 ‡ 89− 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 Fr Ra actinoids Rf Db Sg Bh Hs Mt Ds Rg Uub Uut Uuq Uup Uuh Uus Uuo * 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu ‡ 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr International Union of Pure and Applied Chemistry Nomenclature of Inorganic Chemistry IUPAC RECOMMENDATIONS 2005 Issued by the Division of Chemical Nomenclature and Structure Representation in collaboration with the Division of Inorganic Chemistry Prepared for publication by Neil G. -
I Finai Summary
NASA CONTRACTOR NASA CR-1104 REPORT I Finai Summary , NATIONAL AERONAUTICS ,4ND SPACE ADMINISTRATION WASHINGTON, D. C. JULY 1968 NASA CR-1104 STUDY OF METHODS FOR CHEMICAL SYNTHESIS OF EDIBLE FATTY ACIDS AND LIPIDS Final Summary Edited by John W. Frankenfeld Distribution of this report is provided in the interest of information exchange. Responsibility for the contents resides in the author or organization that prepared it. Prepared under Contract No. NAS 2-3708 by ESSO RESEARCH AND ENGINEERING COMPANY Linden, N.J. for Ames Research Center NATIONAL AERONAUTICS AND SPACE ADMINISTRATION For sale by the Clearinghouse for Federal Scientific and Technical Information Springfield, Virginia 22151 - CFSTI price $3.00 PRECEDING PAGE BLANK NOT FILMED. I* The authors wish to express their appreciation for the assistance V PRECEDING PAGE BLANK NOT FILMED. CONTENTS Page LIST OF FIGURES ix LIST OF TABLES X SUMMARY 1 INTRODUCTION 2 Human Energy Requirements - Advantages of Fats 2 Statement of the Problem 3 Approach - Assumptions 4 TECHNICAL Di SCiiSSION 6 Historical - The German Process 6 REDUCTIVE POLYMERIZATION OF CARBON MONOXIDE 10 The Fischer-Tropsch Synthesis 10 Wax Cracking and Oxidative Dehydrogenation 19 The Ziegler Reaction 20 Telomerization of Ethylene and Acetylene 25 SYNTHESIS OF ETHnENE AND CONVERSION OF Cog TO CO 26 Ethylene y& Methane and Acetylene 26 Reduction of Carbon Dioxide to Carbon Monoxide 29 Conversion of Carbon Monoxide to Ethylene 31 CONVERSION OF HYDROCARBONS TO ACIDS 34 Oxidation of Paraffins 34 Oxidation of Olefins 34 Ozonolysis -
United States Patent Office Patented Aug
..., 2,846,330 United States Patent Office Patented Aug. 5, 1958 1. 2 2,846,330 mixing may be carried out in the presence of Solvents, for example benzine or turpentine oil, and it is not neces WAX CoMPOSITIONS sary to separate the wax components before they are Erich Berthold, Hans Hoyer, and Guido von Rosenberg, finally worked up to yield, for example shoe creams or Gersthofen, Germany, assignors to Farbwerke Hoechst floor waxes. - . Aktiengesellschaft vormals Meister Lucius & Bruning, The preferred ratio of wax acids to fatty acids is be Frankfurt am Main, Germany, a corporation of Ger tween 75 and 97 parts of wax acids and 25 and 3 parts many of fatty acids, a ratio between 85 and 96 parts of wax No Drawing. Application December 31, 195 acids and 15 and 4 parts of, fatty acids being especially Serial No. 479,213 10 advantageous. The metal content generally ranges from 0.5 percent to 10 percent, preferably from 1 percent to Claims priority, application Germany December 31, 1953 5 percent, calculated upon the total amount of the par 8 Claims. (Cl. 106-268) tially saponified mixture of esters. The ratio of calcium and the second metal may be chosen at will, the preferred The present invention relates to compositions of wax, ratio lying within the range from 1:5 to 5:1. w fatty acid esters and fatty acid salts. Among the salts mentioned above zinc salts are of It is known to prepare and use waxes containing, in special advantage. - addition to the esters of the acids obtained by chromic Particularly suitable acid components are, beside the acid oxidation of montana wax, calcium salts of the said oxidation products of montana wax having an acid num acids. -
Computational Exploration of Hypercoordinate Atoms in Molecules
COMPUTATIONAL EXPLORATION OF HYPERCOORDINATE ATOMS IN MOLECULES by KEIGO ITO (Under the Direction of Paul von Ragué Schleyer) ABSTRACT This dissertation presents a computational exploration of unconventional molecules containing hypercoordinate atoms (i.e., those having a higher number of nearest neighboring atoms than expected by Lewis-based predictions). The four chapters in this dissertation discuss two different structural types: (a) those containing three-dimensional hypercoordinate environment (Chapters 2 and 3) and, (b) those having atoms exhibiting planar hypercoordination (Chapters 4 and 5). While di-coordinate bridging hydrogens are well known, higher hydrogen coordinations are rare. Chapter 2, entitled “Hypercoordinate Hydrogen in Scandium Hydride Clusters” demonstrates unusually high hydrogen coordinations (up to eight) in scandium hydride clusters. In contrast to known molecules containing hexacoordinate carbons, which have asymmetric environments, Chapter 3 (Synergistic Bonding in Three Dimensional Hypercoordinate Carbon) presents molecules with symmetrical three-dimensional hexacoordinate carbons (surrounded by six equivalent carbons). Achieving hypercoordination in planar geometries is especially challenging due to the reduction of out-of-plane bonding opportunities and increased steric repulsion between the ligands. Chapter 4, entitled “Myriad Planar Hexacoordinate Carbon Molecules Inviting Synthesis”, focuses on the elaboration of 2– planar hexacoordinate carbon cluster (CB6 ) based on a hydrocarbon grafting strategy. -
BACTERIAL HYDROCARBON OXIDATION Davis
BACTERIAL HYDROCARBON OXIDATION I. OXIDATION OF n-HEXADECANE BY A GRAM-NEGATIVE COCCuS' JAMES E. STEWART,2 3R. E. KALLIO, D. P. STEVENSON, A. C. JONES, AND D. 0. SCHISSLER Department of Bacteriology, State University of Iowa, Iowa City, Iowa, and Shell Development Company, Emeryville, California Received for publication March 17, 1959 The pioneering work of Sohngen (1913) es- (Brown and Strawinski, 1958; Dworkin and tablished that a variety of aerobic microorganisms Foster, 1956). Many reports in the literature are capable of growing at the sole expense of indicate that fatty acids, aldehydes, or alcohols diverse paraffins. These findings have been have been recovered from cultures oxidizing extended and corroborated so often since then aliphatic paraffins (see Beerstecher, 1954, for that detailed documentation does not seem neces- complete citations). In no case, however, has a sary here, especially since the subject of microbial fatty acid (or other intermediate) been identi- hydrocarbon oxidation has been comprehensively fied which has a carbon skeleton identical to the and frequently reviewed (Beerstecher, 1954; alkane being oxidized, thus leaving in question Davis and Updegraff, 1954; ZoBell, 1950). the locus of the primary enzymatic attack on the Despite the extensive literature on the subject alkane molecule. of the mechanisms by which bacteria and other This paper summarizes preliminary findings of microorganisms attack hydrocarbons, the re- a study undertaken to investigate the mecha- actions have not been subjected to intensive