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
    • 9. 发明申请
    • CATALYTIC CONVERSION OF HYDROFLUOROALKANOL TO HYDROFLUOROALKENE
    • 氢氟烷醇对氢氟酸的催化转化
    • WO2006063069A3
    • 2006-08-17
    • PCT/US2005044298
    • 2005-12-09
    • HONEYWELL INT INCMUKHOPADHYAY SUDIPNAIR HARIDASAN KTUNG HSUEHSUNG
    • MUKHOPADHYAY SUDIPNAIR HARIDASAN KTUNG HSUEHSUNG
    • C07C17/00C07C21/18
    • C07C17/00C07C17/25C07C21/18
    • Methane is used as the selective dehydrating agent for the production of 2,3,3,3-tetrafluoro-l-propene (R1234yf) from 2,2,3,3,3-pentafluoro-l-propanol. Supported transition metal catalysts are prepared and used for this reaction with high activity. Almost 58% selectivity to R1234yf is obtained at an alcohol conversion level of 60% using unsupported Ni-mesh as the catalyst. Pd and Pt show almost similar level of conversion; however, the selectivity to the desired product is low. The activity of the metal catalyst was found to be a function of the type of support material, activated carbon showing better activity than alumina. Different important process parameters such as temperature, pressure, and contact time are studied to optimize the process. High pressure and temperature are deleterious to the rate of 1234yf formation; yet, the highest yield to 1234yf is obtained while performing a reaction at 494°C with a contact time of 23 sec.
    • 甲烷被用作从2,2,3,3,3-五氟-1-丙醇制备2,3,3,3-四氟-1-丙烯(R1234yf)的选择性脱水剂。 制备负载型过渡金属催化剂,并以高活性用于该反应。 使用未负载的Ni-网作为催化剂,在60%的醇转化率下获得对R1234yf几乎58%的选择性。 Pd和Pt显示几乎相似的转化水平; 然而,对所需产物的选择性低。 发现金属催化剂的活性是支撑材料的类型的函数,活性炭表现出比氧化铝更好的活性。 研究了不同的重要工艺参数,如温度,压力和接触时间,以优化工艺。 高压和高温对于1234yf的形成是有害的; 而在494℃下以23秒的接触时间进行反应,得到最高的1234yf产率。