406 A Direct Method for Synthesis of ZSM-5 Chinese Patent Application 85100463 from Nankai University describes a method for the direct synthesis of ZSM-5 zeolites. As compared with current methods, which use an additional agent such as an organic amine or alcohol, the said method only uses water-glass, an inorganic acid and an aluminate as starting materials. This makes it cheaper, higher in yield and shorter in crystallisation time, and no environmental contamination is caused by the organic amine. Wang Xinkui
Rare Earth Nickel Catalyst Chinese Patent Application 85100025 from Tianjin University discloses a rare earth nickel catalyst for steam reforming of hydrocarbons to hydrogen. Its activity is cgmparable at low temperature (4>0-500 C) to that of a RKN catalyst from Denmark, but the ability of this catalyst to resist carbon deposition is much better than that of RKN. The composition of the catalyst.based on oxide is: 2-10% rare earths, IO-25% Ni, 30-40% Mg and 40-50% Al.
800,000 ton/year hydrocracking unit of ElaomingPetroleum Co. has been in production since November 1982 and a 900,000 ton/year unit of Shanghai Petrochemical Complex Works has been completed and was put into operation recently. (Source: Chinese J. of Chemical World. I\o.5 (1985) 162) Uang Dinzhu Reaction Mechanism for Methanol to Hydrocarbon Conversion on HZSM-5 An article of this title was published in The Chinese Journal of Fuel Chemistry and Technology (Vol. 14, No. 1, (1986) 9). The experimental results were obtained by studying the adsorption and reaction of methanol and hydrocarbons on IIZSM-5using TPSR and GC-MS methods. The reaction mechanism was concluded to be as follows: (1) The formation of dimethyl ether from methanol is mainly on Lewis acid sites, and other hydrocarbons arc formed on Bronsted acid sites; (2) The formation of the C-C bonds is attributed to the surface reaction of adsorbed ether-like species with the elimination of water; (3) Olefins are the precursors of aromatics and propylene is a more important precurcor than ethylene.
Wang Xinkui 10th Canadian Symposium on Catalysis Hydrocracking Processes in China The hydrocracking technique has been studied in China ever since the beginning of 1950's. The first unit for high pressure hydrocracking was put into operation in 1951, using oil-shale light diesel oil as feed stock to produce gasoline and kerosene. With respect to research on hydrocracking catalyst, a break-through was made at 1960's. The first unit of high pressure hydrocracking designed and manufactured by our own country was put into operation at Daqing Refinery in 1983. At the end of the 1970's, four hydrocracking units were imported, two of which have been completed and the other two are under construction. In addition, two moderate pressure units are under design and construction. A 400,000 ton/year hydrocracking unit has been in production successfully since August 1984 at the Fushnn 3rd Refinery, which is the largest unit designed by our own country, its technical level corresponding to the world levels of the middle of 1970's. A ~edCatalysfs
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It has been drawn to our attention that the Catalysis Division of the Chemical Institute of Canada have available spare copies of the preprints of the 10th Canadian Symposium on Catalysis. These cost $50.00 (Canadian) and can be obtained from the Institute at 1785 Alta Vista Drive, Suite 300, Ottawa, Ontario, Canada KlG 3Y6. Preprints are also available for the following symposia: 5th (1976), 7th (1980), 8th (1982), 9th (1984); the first three of these also cost $50 while the last costs $60. Residual Upgrading A report by Oxenham Technology Associates, New York, (see Hydrocarbon Processing, 64 (1985) 19) predicts that the usage of catalysts for upgrading petroleum residuals in North America will triple by 1994 while the process capacity for residual hydrotreating will double from 338,000 barrels per day in 1984 to a projected 680,000 barrels per day in 1994. According to the report,