CAS: 12136-45-7; Potassium Oxide

专利信息

专利号:WO-2020253244-A1
优先权日:2019-06-20
标 题 :Process for catalytic synthesis of lactide
发明人：JIANG WEI; ZHANG YANKAI; SUN PING; LI AIMIN; ZHANG QUANXING
权利人:NANJING UNIVERSITY OF TECHNOLOGY; NANJING QUANKAI RES INSTITUTE OF BIOMATERIALS CO LTD
摘要:The present invention provides a process for the catalytic synthesis of lactide, comprising: mixing a lactic acid oligomer with a composite catalyst; and synthesizing lactide under a heating condition, and collecting the product using a vacuum distillation mode. The used composite catalyst is composed of a zinc or tin compound and an alkali metal compound. Compared with the prior art, the advantages of the present invention are that: the used composite catalyst features a high production rate with a small use amount, a low reaction temperature (150-220°C), and a short reaction time (2-5 h), has a single pass yield that may reach 95% or more, reduces energy consumption compared with the prior art, and facilitates industrial implementations.

专利号:US-2016008797-A1
优先权日:2014-06-04
标 题:Method for the synthesis of porous inorganic material, catalytic cracking of petroleum hydrocarbons and preparation of catalyst thereof
发明人：CHEN LETIAN; CHEN JIANZHONG
权利人:ZHANJIANG GIANT SUCCESS INVEST CO LTD
摘要:A method for synthesis of porous inorganic materials, preparation of a catalyst and catalytic cracking of petroleum hydrocarbons thereof includes processes for synthesis of porous inorganic materials and preparation of the catalytic cracking catalyst and catalytic cracking of petroleum hydrocarbons. The synthesis process is advantaged in low cost in raw materials; the porous inorganic material has various pore structures; and transitional metal used overcomes the defects of the catalytic properties. The porous inorganic material serving as the main active ingredient and containing crystalline aluminum silicate zeolite structures provides surface acidity required by the catalytic reaction. The surface acidity is flexibly adjusted. The hierarchical pore profile improves the accessibility of the active center of the zeolite structure and favors the reaction efficiency and benefits of the petroleum hydrocarbon cracking, and reduces the negative effects caused by diffusion limit. The catalyst containing the porous inorganic material has low manufacturing cost and better properties.

专利号:US-7271120-B2
优先权日:2004-08-27
标 题 :Catalyst for the synthesis of dimethyl carbonate from urea and methanol, preparation and use thereof
发明人：SUN YUHAN; WEI WEI; ZHAO NING; SUN BAOYUAN; ZHANG BINGSHENG; CHEN YANJUN
权利人:FEICHENG ACID CHEMICALS CO LTD
摘要:A catalyst for the preparation of dimethyl carbonate from urea and methanol having a composition on weight base of: active component of from 20 to 50 wt %, and carrier of from 80 to 50 wt %, and prepared by equal-volume spraying and impregnating method is disclosed. The method for the synthesis of dimethyl carbonate can be carried out in a catalytic rectification reactor, said method comprising: (1) dissolving urea in methanol to form a methanol solution of urea; and (2) feeding the methanol solution of urea and methanol counter-currently into the reaction zone, wherein the reaction is carried out at conditions including reaction temperature of from 120° C. to 250° C., reaction pressure of from 0.1 MPa to 5 MPa, kettle bottom temperature of from 70° C. to 210° C., stripping section temperature of from 70° C. to 250° C., rectifying section temperature of from 70° C. to 280° C., and reflux ratio of from 1:1 to 20:1. The preparation of the catalyst according to the present invention is simple and has good repeatability, and the catalyst could further enhance the yield of DMC as well as conversion of urea in the catalytic rectification reactor.

专利号:US-12312290-B2
优先权日:2019-05-31
标 题 :Isobutyl benzene and a process for synthesis of isobutyl benzene by using a catalyst
发明人：KAMBLE SANJAY PANDURAG; RODE CHANDRASHEKHAR VASANT; PILLAI NANDAKUMAR VELAYUDHAN; RAMALINGAM KARTHICK; SHETTY ROHIT RAVI
权利人:MANGALORE REFINERY & PETROCHEMICALS LTD
摘要:The present disclosure provides a process for the synthesis of isobutyl benzene by side chain alkylation of toluene in the presence of a catalyst. The catalyst used in the process of present disclosure provides maximum conversion of toluene with high selectivity towards isobutyl benzene.

专利号:US-4598061-A
优先权日:1984-02-02
标 题 :Catalyst for the synthesis of methanol and alcohol mixtures containing higher alcohols and method of making the catalyst
发明人：SCHNEIDER MICHAEL; KOCHLOEFL KAREL; BOCK ORTWIN
权利人:SUED CHEMIE AG
摘要:Catalyst for the synthesis of alcohol mixtures containing methanol and higher aliphatic alcohols from CO and H2, which contains, as an oxide precursor, (a) copper oxide and zinc oxide, which can be transformed into the catalytically active state by reduction with hydrogen; (b) aluminum oxide as a thermostabilizing substance and (c) at least one alkali carbonate or alkali oxide, the oxidic precursor comprising from 20 to 70% of the total volume of pores having a diameter between 14 and 7.5 nm, the alkali content being 13-130x10-6 gram atom alkali metal per gram of the oxidic precursor, and the aluminum oxide component having been obtained from a colloidally dispersed aluminum hydroxide gel or sol.

专利号:US-4510264-A
优先权日:1982-10-01
标题 :Process for the preparation of a catalyst for the synthesis of methane
发明人：MATSUOKA HIROO; MATSUOKA SEIICHI; YAMABE TSUNEKICHI; FUJIE HIROKAZU; MORI KENJI; TAMURA KOUJI; YAMADA MASATOSHI; FURUTA AKIO
权利人:JGC CORP
摘要:A catalyst for the synthesis of methane by the hydrogenation of carbon monoxide and/or carbon dioxide, comprising alumina, nickel and barium or sodium; and a process for the preparation of said catalyst, comprising firstly having barium or sodium carried on alumina and secondly having nickel carried thereon.