会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Method for adding make-up fluid bed oxidation catalysts for fluid bed
oxidation catalysts containing the mixed oxides of vanadium and
phosphorus
    • 添加含有钒和磷的混合氧化物的流化床氧化催化剂的补充流化床氧化催化剂的方法
    • US4518523A
    • 1985-05-21
    • US472400
    • 1983-03-04
    • Patricia R. BlumErnest C. MilbergerMark L. Nicholas
    • Patricia R. BlumErnest C. MilbergerMark L. Nicholas
    • C07C51/215B01J27/14
    • C07C51/215
    • A process is provided for activating fluidizable catalysts containing the mixed oxides of vanadium and phosphorus useful for the production of maleic anhydride from 4-carbon atom hydrocarbons and oxygen by subjecting the catalyst to fluidization conditions and contacting the fluidized catalyst with oxygen at a temperature at least 20.degree. C. greater than the temperature required to produce about 85 percent conversion of hydrocarbon. A process is also provided for adding make-up fluid bed catalyst to an equilibrated catalyst by introducing a calcined and unequilibrated make-up catalyst into the fluid bed vessel containing equilibrated catalyst, subjecting the mixture to fluidization conditions and contacting the fluidized catalyst mixture with oxygen at a temperature at least 20.degree. C. greater than the temperature required to produce about 85 percent conversion of the hydrocarbon. The catalysts so activated and a process for producing maleic anhydride from 4-carbon atom hydrocarbons is also provided.
    • 提供了一种用于激活含有钒和磷的混合氧化物的可流化催化剂的方法,其可用于从4-碳原子烃和氧生产马来酸酐,所述方法是使催化剂经过流化条件并使流化催化剂与氧在至少温度下接触 大于产生约85%碳氢化合物转化所需的温度。 还提供了一种方法,用于通过将煅烧和未平衡的补充催化剂引入含有平衡的催化剂的流化床容器中,将混合物进入流化条件并使流化催化剂混合物与氧接触而将补充流化床催化剂添加到平衡的催化剂中 在比产生约85%烃转化所需的温度高至少20℃的温度下进行。 还提供了如此活化的催化剂和由4-碳原子烃生产马来酸酐的方法。
    • 8. 发明授权
    • Preparation of maleic anhydride
    • 马来酸酐的制备
    • US4350639A
    • 1982-09-21
    • US258712
    • 1981-04-29
    • Ernest C. MilbergerNoel J. BremerDennis E. Dria
    • Ernest C. MilbergerNoel J. BremerDennis E. Dria
    • B01J23/22B01J27/198C07C51/215C07D307/60
    • C07C51/215B01J23/002B01J23/22B01J27/198B01J2523/00
    • The present invention provides improved oxidation catalysts containing mixed oxides of vanadium and phosphorus and the method for the preparation thereof, which catalysts are particularly effective in the oxidation of n-butane, n-butenes, 1,3-butadiene or a mixture thereof with molecular oxygen or an oxygen-containing gas in the vapor phase to produce excellent yields of maleic anhydride with very good selectivity. At least one vanadium compound, a substantial portion of which is in the pentavalent state, and at least one phosphorus-containing compound is added to an organic liquid medium capable of reducing at least a portion of the vanadium to a +4 valence state, to form a reaction mixture. Partial reduction of the vanadium is effected in the presence of the phosphorus-containing compound and a highly ordered and uniform mixed vanadium phosphorus oxide-containing catalyst precursor is formed.
    • 本发明提供了含有钒和磷的混合氧化物的改进的氧化催化剂及其制备方法,该催化剂在正丁烷,正丁烯,1,3-丁二烯或其与分子的混合物中的氧化中特别有效 氧气或含氧气体,以非常好的选择性产生优异的马来酸酐产率。 将至少一种钒化合物(其大部分为五价态)和至少一种含磷化合物加入到能够将至少一部分钒还原成+4价态的有机液体介质中,至 形成反应混合物。 在含磷化合物的存在下进行钒的部分还原,形成高度均匀的混合的含氧化钒的催化剂前体。