- Email: [email protected]
New industrial catalytic processes
N6
first article (J. Am. Chem. Soc., 113 (1991) 106), they report that the rate is first order in substrate and oxidant and inversely second order in inhibitor alcohol. 'qhe rate varies slightly with solvent and increased steric bulk at several positions in the epoxidation system...results in increased epoxidation rates as well as better kinetic resolution and asymmetric induction." In the companion article (J. Am. Chem. Soc., 113 (1991) 113, M.G. Finn and K.B. Sharpless focus on the catalyst structure. [Ti(tartrate)(OR)2]2, is identified as the active catalyst for asymmetric epoxidation of allylic alcohols by tertiary alkyl hydroperoxides. The pointed out that the "discovery of this catalyst system was serendipitous in that it was impossible to anticipate that a single species would dominate the Ti-tartrate equilibrium mixture and that this species would be so kinetically active". Since then, by testing approximately 50 tartrate analogues, the authors have found that the titanium and tartrate species are perfectly matched. "Slight deviations in ligand structure and/or metal alkoxides severely reduce the effectiveness of the reaction."
Alkylation Catalysts L.F. Albright (Oil Gas J., (26 Nov. 1990) 70) has provided the concluding instalment of a two-part series on sulphuric acid and hydrogen fluoride as catalysts for the alkylation of isobutene. He reviews here details of both of these commercial approaches, provides a comparison of the process options, and discusses some new technologies. The alkylation of isobutane with C3-C5 alkenes is an important refinery operation used to increase the octane number of gasoline and the amount of gasoline obtainable from a barrel of crude oil. There appear to be opportunities for
applied catalysis-- Volume 73 No. 1 - -
major improvements in current technology; however, "many refiners have done little research in the last 10 to 15 years to develop this improved technology". This is now being prompted by increased concerns for safety, especially for those that use HF as a catalyst. JOHN ARMOR Pergamon Press Joins Elsevier
It has been announced that Elsevier Science Publishers has signed an agreement with Maxwell Communications Corporation to make Pergamon Press a part of the Elsevier Corporation. Both parties are enthusiastic about the opportunities this relation creates. Both companies have a long and proud tradition of facilitating communication among scientists. Pergamon will continue to operate as a separate company. New Industrial Catalytic Processes
As announced previously in News Brief (67 (1990) N2), the Industrial and Engineering Chemistry Division of the ACS will run an awards symposium honouring Dr. James F. Roth as the first recipient of the new award in Industrial Chemistry sponsored by Akzo Chemicals. The Symposium will be held during the meeting of the National American Chemical Society in New York City on Wednesday 28 August 1991. Representatives from major chemical and petroleum companies have been invited to contribute extended papers. The presentations will focus on catalytic R&D technology which is being, or recently has been, commercialized, particularly in North America. Commitments for presentations have been received from 30 May 1991
N7
Chevron R&D Company, W.R. Grace & Co., Engelhard Corporation, Eastman Kodak Co., Ashland Petroleum Co., E.I. du Pont de Nemours & Co., Mobil R&D Corp., UOP, and others. Copies of the final program for this symposium may be obtained by writing the symposium chairman, John N. Armor at the address given in the Calendar.
Zeolite Chemistry and Catalysis This meeting will be held from 8th to 13th September 1991, not 2nd to 6th September as previously given in the Calendar of Forthcoming Events. We apologise to anyone for whom this may have caused inconvenience.
Calendar of Forthcoming Events (For detailed information on the cited events, please refer to the Applied Catalysis issue mentioned with the entry.)
Ketjen Catalysts Symposium '91
2- 5 June 1991 Scheveningen, Netherlands
Contact: H.J. Lovink, Akzo Chemicals BV, P.O. Box 975, 3800 AZ Amersfoort, Netherlands (+31-33)676767
3- 7 June 1991 (~ren~s, Sweden
EUCHEM Conference on Catalysis "Basis of Catalysis" Contact: R. Larsson, Inorganic Chemistry 1, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden, (+46-36)107000
24-26 June 1991 Evanston, IL, USA
5th International Symposium on Catalyst Deactivation
27-29 June 1991 Evanston, IL, USA
5th USA-Japan-China Symposium on Catalysis
Contact: Prof. C.H. Bartholomew, Dept. of Chem. Eng., 350 CB, Brigham Young Univ., Provo, UT 84602, USA (Appl.Catal., 56(1989)N22)
Contact: P. Long, Northwestern Univ., Center for Catalysis and Surface Science, 2137 Sheridan Rd, Room 123, Evanston IL 60208, USA, (+1-708)4914354 (Appl.Catal., 72(1991)N19)
2- 5 July 1991 York, UK
International Symposium on Supported Reagent Chemistry
7-12 July 1991 Compi~gne, France
7th International Conference on Surface and Colloid Science Including meeting on Chemical Processes (Catalysis, Adsorption) on Solid Surfaces
Contact: J.F. Gibson, Royal Society of Chemistry, Burlington House, London W1V 0BN, UK (Appl.Catal., 66(1990)N22)
Contact: Secretariatof 7th ICSCS, c/o Wagon-lits Tourisme, B.P. 244, F-92307 Levallois-PerretC(~dex,France (Appl.Catal., 63(1990)N9 ) 17-21 July 1991 Loughborough, UK
Course on "Applications of Heterogeneous Catalysis" Contact: J. Massey, Dept. of Chemical Engineering, University of Technology, Loughborough LEll 3TU, UK (+44-509)222530 (Appl. Catal., 72(1991)N18)
applied catalysis-- Volume 73 No. 1 - -
30 May 1991
first article (J. Am. Chem. Soc., 113 (1991) 106), they report that the rate is first order in substrate and oxidant and inversely second order in inhibitor alcohol. 'qhe rate varies slightly with solvent and increased steric bulk at several positions in the epoxidation system...results in increased epoxidation rates as well as better kinetic resolution and asymmetric induction." In the companion article (J. Am. Chem. Soc., 113 (1991) 113, M.G. Finn and K.B. Sharpless focus on the catalyst structure. [Ti(tartrate)(OR)2]2, is identified as the active catalyst for asymmetric epoxidation of allylic alcohols by tertiary alkyl hydroperoxides. The pointed out that the "discovery of this catalyst system was serendipitous in that it was impossible to anticipate that a single species would dominate the Ti-tartrate equilibrium mixture and that this species would be so kinetically active". Since then, by testing approximately 50 tartrate analogues, the authors have found that the titanium and tartrate species are perfectly matched. "Slight deviations in ligand structure and/or metal alkoxides severely reduce the effectiveness of the reaction."
Alkylation Catalysts L.F. Albright (Oil Gas J., (26 Nov. 1990) 70) has provided the concluding instalment of a two-part series on sulphuric acid and hydrogen fluoride as catalysts for the alkylation of isobutene. He reviews here details of both of these commercial approaches, provides a comparison of the process options, and discusses some new technologies. The alkylation of isobutane with C3-C5 alkenes is an important refinery operation used to increase the octane number of gasoline and the amount of gasoline obtainable from a barrel of crude oil. There appear to be opportunities for
applied catalysis-- Volume 73 No. 1 - -
major improvements in current technology; however, "many refiners have done little research in the last 10 to 15 years to develop this improved technology". This is now being prompted by increased concerns for safety, especially for those that use HF as a catalyst. JOHN ARMOR Pergamon Press Joins Elsevier
It has been announced that Elsevier Science Publishers has signed an agreement with Maxwell Communications Corporation to make Pergamon Press a part of the Elsevier Corporation. Both parties are enthusiastic about the opportunities this relation creates. Both companies have a long and proud tradition of facilitating communication among scientists. Pergamon will continue to operate as a separate company. New Industrial Catalytic Processes
As announced previously in News Brief (67 (1990) N2), the Industrial and Engineering Chemistry Division of the ACS will run an awards symposium honouring Dr. James F. Roth as the first recipient of the new award in Industrial Chemistry sponsored by Akzo Chemicals. The Symposium will be held during the meeting of the National American Chemical Society in New York City on Wednesday 28 August 1991. Representatives from major chemical and petroleum companies have been invited to contribute extended papers. The presentations will focus on catalytic R&D technology which is being, or recently has been, commercialized, particularly in North America. Commitments for presentations have been received from 30 May 1991
N7
Chevron R&D Company, W.R. Grace & Co., Engelhard Corporation, Eastman Kodak Co., Ashland Petroleum Co., E.I. du Pont de Nemours & Co., Mobil R&D Corp., UOP, and others. Copies of the final program for this symposium may be obtained by writing the symposium chairman, John N. Armor at the address given in the Calendar.
Zeolite Chemistry and Catalysis This meeting will be held from 8th to 13th September 1991, not 2nd to 6th September as previously given in the Calendar of Forthcoming Events. We apologise to anyone for whom this may have caused inconvenience.
Calendar of Forthcoming Events (For detailed information on the cited events, please refer to the Applied Catalysis issue mentioned with the entry.)
Ketjen Catalysts Symposium '91
2- 5 June 1991 Scheveningen, Netherlands
Contact: H.J. Lovink, Akzo Chemicals BV, P.O. Box 975, 3800 AZ Amersfoort, Netherlands (+31-33)676767
3- 7 June 1991 (~ren~s, Sweden
EUCHEM Conference on Catalysis "Basis of Catalysis" Contact: R. Larsson, Inorganic Chemistry 1, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden, (+46-36)107000
24-26 June 1991 Evanston, IL, USA
5th International Symposium on Catalyst Deactivation
27-29 June 1991 Evanston, IL, USA
5th USA-Japan-China Symposium on Catalysis
Contact: Prof. C.H. Bartholomew, Dept. of Chem. Eng., 350 CB, Brigham Young Univ., Provo, UT 84602, USA (Appl.Catal., 56(1989)N22)
Contact: P. Long, Northwestern Univ., Center for Catalysis and Surface Science, 2137 Sheridan Rd, Room 123, Evanston IL 60208, USA, (+1-708)4914354 (Appl.Catal., 72(1991)N19)
2- 5 July 1991 York, UK
International Symposium on Supported Reagent Chemistry
7-12 July 1991 Compi~gne, France
7th International Conference on Surface and Colloid Science Including meeting on Chemical Processes (Catalysis, Adsorption) on Solid Surfaces
Contact: J.F. Gibson, Royal Society of Chemistry, Burlington House, London W1V 0BN, UK (Appl.Catal., 66(1990)N22)
Contact: Secretariatof 7th ICSCS, c/o Wagon-lits Tourisme, B.P. 244, F-92307 Levallois-PerretC(~dex,France (Appl.Catal., 63(1990)N9 ) 17-21 July 1991 Loughborough, UK
Course on "Applications of Heterogeneous Catalysis" Contact: J. Massey, Dept. of Chemical Engineering, University of Technology, Loughborough LEll 3TU, UK (+44-509)222530 (Appl. Catal., 72(1991)N18)
applied catalysis-- Volume 73 No. 1 - -
30 May 1991