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Dehydrogenation of methanol to methyl formate
N20
The catalytic properties of a K2CO3-promoted MoS2catalyst which is resistant to sulphur during the synthesis of lower alcohols from syngas have been reported by B. Leng and his co-workers from the Beijing Research Institute of Chemical Technology (see Proc. of the 5th National Congress on Catalysis, Lanzhou, China, 20-23 August 1990, p. 305). The synthesis reactions were carried out in a microreactor under the following conditions: temperature 280-320°C, pressure 5.0-9.5 MPa, H2/CO = 1.1 and SV = 3500-10,000 h-1, using a feed gas containing sulphur 100300 ng/ml. The results indicated that when the space velocity of the feed gas was 6000-10,000 h-~, the STY of the mixed alcohols reached 0.3 g/ml cat./h with a selectivity towards total alcohols of more than 80%, the proportion of C2+ alcohols was in the range 30-70%. This catalyst is claimed to possess improved stability and resistance to sulphur during a period of 200 h. The addition of a certain amount of cobalt to the catalyst appears to give a further increase in the alcohol selectivity. Partial Oxidation of Methane to Methanol This reaction has been studied by Z. Huang et al. in the presence of Cr3+-zr 4÷SO42-/silica gel catalyst (Cr203 2%) at about 250°C and 0.4 MPa. This catalyst gave a methane conversion of about 5% with a methanol yield of over 3%. The oxygenates formed were methanol, formaldehyde and the carbon oxides. The authors pointed out that the active sites of the catalyst were the super-strong B acid sites. They discuss a possible reaction pathway. (Source: Chinese Journal Natural Gas Chemical Industry, 5 (1989) 6)
Dehydrogenation of Methanol to Methyl Formate A plant with a scale of 2000 tons per year for the production of methyl formate from the dehydrogenation of methanol was built and put into operation in 1990 in the Wujin Chemical Fertilizer factory, China. This process, using a solid catalyst and operating at atmospheric pressure, was developed by the Southwest Research Institute of Chemical Technology, China. The products from this process have been claimed to cost 30-40% less than those from the conventional process. (Source: Comprehensive News, Qilu Petrochemical Corp., China, 8 December 199) Unicat signs Collaboration Agreement in the United States It has been announced that Unicat s.a., created at the end of 1989 in order to promote the research of several universities in the area of catalysis, has signed a collaboration agreement with Chemical Engineering Partners (CEP) located at Irvine (California). This company is part of the group Evergreen Oil Inc. (Irvine, California), which has a worldwide recognized expertise in catalytic processes, especially for petroleum refining. These catalytic processes require a multidisciplinary approach involving a collaboration between experts in organic chemistry, biochemistry, surface science, crystallography and chemical engineering. Unicat, which aims at being an interface on European level between industry and university for catalysis research, has already obtained the cooperation of several Belgian, Dutch and German laboratories. Negotiations are going on with other
The catalytic properties of a K2CO3-promoted MoS2catalyst which is resistant to sulphur during the synthesis of lower alcohols from syngas have been reported by B. Leng and his co-workers from the Beijing Research Institute of Chemical Technology (see Proc. of the 5th National Congress on Catalysis, Lanzhou, China, 20-23 August 1990, p. 305). The synthesis reactions were carried out in a microreactor under the following conditions: temperature 280-320°C, pressure 5.0-9.5 MPa, H2/CO = 1.1 and SV = 3500-10,000 h-1, using a feed gas containing sulphur 100300 ng/ml. The results indicated that when the space velocity of the feed gas was 6000-10,000 h-~, the STY of the mixed alcohols reached 0.3 g/ml cat./h with a selectivity towards total alcohols of more than 80%, the proportion of C2+ alcohols was in the range 30-70%. This catalyst is claimed to possess improved stability and resistance to sulphur during a period of 200 h. The addition of a certain amount of cobalt to the catalyst appears to give a further increase in the alcohol selectivity. Partial Oxidation of Methane to Methanol This reaction has been studied by Z. Huang et al. in the presence of Cr3+-zr 4÷SO42-/silica gel catalyst (Cr203 2%) at about 250°C and 0.4 MPa. This catalyst gave a methane conversion of about 5% with a methanol yield of over 3%. The oxygenates formed were methanol, formaldehyde and the carbon oxides. The authors pointed out that the active sites of the catalyst were the super-strong B acid sites. They discuss a possible reaction pathway. (Source: Chinese Journal Natural Gas Chemical Industry, 5 (1989) 6)
Dehydrogenation of Methanol to Methyl Formate A plant with a scale of 2000 tons per year for the production of methyl formate from the dehydrogenation of methanol was built and put into operation in 1990 in the Wujin Chemical Fertilizer factory, China. This process, using a solid catalyst and operating at atmospheric pressure, was developed by the Southwest Research Institute of Chemical Technology, China. The products from this process have been claimed to cost 30-40% less than those from the conventional process. (Source: Comprehensive News, Qilu Petrochemical Corp., China, 8 December 199) Unicat signs Collaboration Agreement in the United States It has been announced that Unicat s.a., created at the end of 1989 in order to promote the research of several universities in the area of catalysis, has signed a collaboration agreement with Chemical Engineering Partners (CEP) located at Irvine (California). This company is part of the group Evergreen Oil Inc. (Irvine, California), which has a worldwide recognized expertise in catalytic processes, especially for petroleum refining. These catalytic processes require a multidisciplinary approach involving a collaboration between experts in organic chemistry, biochemistry, surface science, crystallography and chemical engineering. Unicat, which aims at being an interface on European level between industry and university for catalysis research, has already obtained the cooperation of several Belgian, Dutch and German laboratories. Negotiations are going on with other