CATALYST FOR DEHYDRATION OF DIOLS,申请号SU19752110350-传众专利搜索

CATALYST FOR DEHYDRATION OF DIOLS

申请公布号：SU578838(A3)

申请号：SU19752110350

申请日期：1975.02.21

申请公布日期：1977.10.30

申请人：

KOMPANI FRANSEZ DE RAFFINAZH (FIRMA)

发明人：ZHORZH SZABO,FR;ZHAN MOREN,FR

分类号：B01J23/02;B01J27/18;C07B61/00;C07C1/00;C07C1/24;C07C11/12;C07C29/60;C07C67/00

主分类号：B01J23/02

摘要：1489832 Olefinic alcohols COMPAGNIE FRANCAISE DE RAFFINAGE 14 Feb 1975 [22 Feb 1974] 6455/75 Heading C2C [Also in Divisions B1 and C5] Beta-olefinic alcohols are produced in admixture with diolefins by the dehydration of diols in contact with a catalyst comprising calcium pyrophosphate either alone or in admixture with at least one pyrophosphate, whether mixed or not, of Li, Na, Sr and Ba, and/or at least one neutral orthophosphate, whether mixed or not, of Li, Na, Sr, Ba and Ca. The dehydration may be effected in the liquid phase or in the vapour phase at 250-600‹ C. and a volume space velocity of 0À1-5 hr.<SP>-1</SP>. The diol may be pure, diluted with inert gas or mixed with olefinic alcohols. The examples describe the dehydration of methyl-2,3-butanediol to give 2-methyl-1-butene-2-ol and isoprene. Carbonyl compounds and 2-methylepoxy-2,3- butane may be produced as by-products.