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Platinum HDN Catalysts
386 Some New Patents The following gives brief details of some new patents which have recently appeared. The source is "Catalysts in Chemistry", 16 (1984) No.4. UOP‘Inc have described (US 4,459,372) the improvement of the hydrothermal stability of supports of silica or alumina by their treatment with a gaseous tetrachloride of Ti, Zr or V andosubsequent calcination at 300600 C. The UK Atomic Energy Authority have claimed (European Patent 116,785) a new catalyst for the oxidation of carbon monoxide which consists of an alumina carrier impregnated with a stannic oxide sol, palladium and platinum, while Monsanto have patented (US 4,457,905) a catalyst consisting of a silica carrier impregnated with a manganese oxide and a phosphorus oxide with the atomic ratio Mn:P of 1.0-1.5: 1.0 for the oxidation of methanol to formaldehyde. British Petroleum (European Patents 119,023 and 119,027) describe catalysts comprising of zeolites pretreated with steam and optionally with hydrogen and containing gallium oxide for the production of aromatic hydrocarbons from alkanes. In two separate patents (GB 2,135,295 and DE 34 05 217), Mitsubishi Gas Chemical Co. Inc. have described catalysts for the steam reforming of methanol to give hydrogen and carbon dioxide; these consist either (a) of copper oxide, oxides of zinc, aluminium and/or chromium and nickel oxide or chromium oxide or an oxide of Pt or Pd or (b) of activated carbon supporting a platinum group metal. Mobil Oil Corporation describe (US 4,463,101) a catalyst consisting of a conventional ironcontaining Fischer-Tropsch catalyst and a ZSM-5 type zeolite for the production of naphtha hydrocarbons from synthesis gas. A series of patents to BASF (European Patents 116,339 and 116,340 and DE 33 04 479) discuss the production of olefins with two to four carbon atoms from methanol or dimethyl ether using either a crystalline aluminosilicate zeolite impregnated with boric acid or a shaped, compressed borosilicate zeolite pretreated with HF or HCl. A new Claus Process catalyst consisting of an active alumina carrier stabilised with lanthanum oxide and impregnated with a transition metal is claimed by Ste Nationale Elf Aquitaine (Production) in DE 34 03 328 while
ap@bd
eahlysk
- Volume 13 No. 2 -January
1985
Bayer AG disclose the use of an activated carbon of particle size 0.3-3.5mm for the oxidation of sulphur dioxide to sulphur trioxide for effluent gas purification (European Patent 118,713).
Platinum
HDN Catalyst
Hydrodenitrogenation (HDN) is one of the most difficult steps in the upgrading and purification of shale oil and other difficult crudes. Much work has been done on this subject but there has been relatively little success because of the difficulty of breaking C-N bonds without at the same time breaking C-C bonds. Catalytica Highlights (10 (1984) No.3) draws attention to a paper by Guttieri and Maier in J. Org. Chem. (49 (1984) 2875) in which the HDN reaction has been shown to occur selectively and at relatively very low temperatures over a 40% Pt on silica catalyst. This surprisingly high loading appears to be necessary for the good HDN activity observed. Examples of the use of the catalyst are given. For example, pyridine was converted to n-pentane in 90% yield at 15O'C while piperidine and n-pentylamine were the primary products at lower temperatures. This paper has also been featured in Catalysts in Chemistry (16 (1984) 196).
Conference to Celebrate of CONICET, Argentina
the Anniversary
Several events were organised in Argentina at the end of 1983 to commemorate the 25th Anniversary of Consejo National de Investigaciones Cientificas y Tecnicas (CONICET) to which most research in the country is connected. One of these activities was the "Conference on Catalysis" which was held in Santa Fe. The lectures given on that occasion have now been published in printed form. They were given by M. Boudart ("Evolution, Present State and Future Trends in Research on Metal Supported Cataysts"), R. Candia ("The Structure of the Co-Mo/A1203,,Catalyst and its Relation to Activity ), M.A. Vannice ("States and Trends of Research on SMSI Behaviour and Hydrogen Spillover"), B.C. Gates ("Catalyst Design: The Winning Catalysts are Multifunrtional"), C.R. Auesteauia ("Sulnhurisation and Thioresistance on Naphtha
ap@bd
eahlysk
- Volume 13 No. 2 -January
1985
Bayer AG disclose the use of an activated carbon of particle size 0.3-3.5mm for the oxidation of sulphur dioxide to sulphur trioxide for effluent gas purification (European Patent 118,713).
Platinum
HDN Catalyst
Hydrodenitrogenation (HDN) is one of the most difficult steps in the upgrading and purification of shale oil and other difficult crudes. Much work has been done on this subject but there has been relatively little success because of the difficulty of breaking C-N bonds without at the same time breaking C-C bonds. Catalytica Highlights (10 (1984) No.3) draws attention to a paper by Guttieri and Maier in J. Org. Chem. (49 (1984) 2875) in which the HDN reaction has been shown to occur selectively and at relatively very low temperatures over a 40% Pt on silica catalyst. This surprisingly high loading appears to be necessary for the good HDN activity observed. Examples of the use of the catalyst are given. For example, pyridine was converted to n-pentane in 90% yield at 15O'C while piperidine and n-pentylamine were the primary products at lower temperatures. This paper has also been featured in Catalysts in Chemistry (16 (1984) 196).
Conference to Celebrate of CONICET, Argentina
the Anniversary
Several events were organised in Argentina at the end of 1983 to commemorate the 25th Anniversary of Consejo National de Investigaciones Cientificas y Tecnicas (CONICET) to which most research in the country is connected. One of these activities was the "Conference on Catalysis" which was held in Santa Fe. The lectures given on that occasion have now been published in printed form. They were given by M. Boudart ("Evolution, Present State and Future Trends in Research on Metal Supported Cataysts"), R. Candia ("The Structure of the Co-Mo/A1203,,Catalyst and its Relation to Activity ), M.A. Vannice ("States and Trends of Research on SMSI Behaviour and Hydrogen Spillover"), B.C. Gates ("Catalyst Design: The Winning Catalysts are Multifunrtional"), C.R. Auesteauia ("Sulnhurisation and Thioresistance on Naphtha