专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明公开

EP1828083A2 CATALYTIC CONVERSION OF HYDROFLUOROALKANOL TO HYDROFLUOROALKENE 有权
标题翻译：氢氟烯烃催化转化为氢氟烯烃
公开(公告)号：EP1828083A2
公开(公告)日：2007-09-05
申请号：EP05853260.7
申请日：2005-12-09
申请人： Honeywell International Inc.
发明人： MUKHOPADHYAY, Sudip , NAIR, Haridasan, K. , TUNG, HsuehSung
IPC分类号： C07C17/00 , C07C21/18
CPC分类号： C07C17/00 , C07C17/25 , C07C21/18
摘要： 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.
摘要翻译：甲烷被用作从2,2,3,3,3-五氟-1-丙醇生产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用于具有高活性的该反应。使用无载体镍网作为催化剂，在醇转化率为60％时，对R1234yf的选择性几乎达到58％。 Pd和Pt显示几乎相似的转化水平; 然而，对所需产品的选择性很低。发现金属催化剂的活性是载体材料类型的函数，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1234yf形成的速率是有害的; 然而，当在494℃和23秒的接触时间下进行反应时获得1234yf的最高产率。

IPRDB

热门服务

关于我们

友情链接

联系方式