专利号:US-6624116-B1 优先权日:1998-09-03 标 题 :On-line synthesis and regeneration of a catalyst used in autothermal oxidation 发明人:BHARADWAJ SAMEER S; MAJ JOSEPH J; SIDDALL JONATHAN H 权利人:DOW GLOBAL TECHNOLOGIES INC 摘要:An on-line method of synthesizing or regenerating catalysts for autothermal oxidation processes, specifically, the oxidation of paraffinic hydrocarbons, for example, ethane, propane, and naphtha, to olefins, for example, ethylene and propylene. The catalyst comprises a Group 8B metal, for example, a platinum group metal and, optionally, a promoter, such as tin, antimony, or copper, on a support, preferably a monolith support. On-line synthesis or regeneration involves co-feeding a volatile Group 8B metal compound and/or a volatile promoter compound with the paraffinic hydrocarbon and oxygen into the oxidation reactor under ignition or autothermal conditions.
专利号:US-8329923-B2 优先权日:2010-06-17 标 题:4, 4′ disubstituted 4H-cyclopentadithiophene and new methods for synthesizing the same 发明人:VANDERZANDE DIRK; LUTSEN LAURENCE; VAN MIERLOO SARAH 权利人:VANDERZANDE DIRK; LUTSEN LAURENCE; VAN MIERLOO SARAH; IMEC; UNIV HASSELT 摘要:The present preferred embodiments relate to a method for the synthesis of a compound having the following general formula: n nthe method comprising the step of reacting, in presence of a diprotic acid having a negative pKa, a compound having the general formula:n n nwherein R 1 and R 2 are organic groups and wherein X and Y are independently selected from the group consisting of hydrogen, chloro, bromo, iodo, boronic acid, boronate esters, borane, pseudohalogen and organotin. It further relates to compounds so obtained and to compounds resulting from the ring closure of compound (II).
专利号:WO-0014037-A1 优先权日:1998-09-03 标题:On-line synthesis and regeneration of a catalyst used in autothermal oxidation
专利号:US-6166283-A 优先权日:1998-09-03 标题:On-line synthesis and regenerating of a catalyst used in autothermal oxidation
专利号:EP-1114013-A1 优先权日:1998-09-03 标 题:On-line synthesis and regeneration of a catalyst used in autothermal oxidation
专利号:EP-1114013-B1 优先权日:1998-09-03 标 题:On-line synthesis and regeneration of a catalyst used in autothermal oxidation