Renewable Isoprene by Sequential Hydrogenation of Itaconic Acid and Dehydra-Decyclization of 3-Methyl-Tetrahydrofuran
Renewable Isoprene by Sequential Hydrogenation of Itaconic Acid and Dehydra-Decyclization of 3-Methyl-Tetrahydrofuran
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DOI：
10.1021/acscatal.6b03335
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发表时间：
2017-02-01
期刊：
影响因子：
12.9
通讯作者：
Dauenhauer, Paul J.
中科院分区：
文献类型：
--
作者：
Abdelrahman, Omar A.;Park, Dae Sung;Dauenhauer, Paul J.
衣康酸（从葡萄糖发酵中获得）的催化氢化产生3-甲基-四氢呋喃（3-MTHF），然后将其进行催化脱氢脱环反应生成异戊二烯。结果表明，在Pd-Re/C催化剂和1000 psig H-2的条件下，一锅级联反应将衣康酸转化为3-MTHF，产率接近80%。随后的气相催化开环和用含磷沸石（包括P-SiO2、P-MFI和P-SPP（自柱撑五元环））进行的3-MTHF脱水在20-25%转化率下表现出90%的二烯选择性（70%异戊二烯，20%异戊烯）。
Catalytic hydrogenation of itaconic acid (obtained from glucose fermentation) yields 3-methyl-tetrahydrofuran (3-MTHF), which then undergoes catalytic dehydra-decyclization to isoprene. It is demonstrated that a one-pot cascade reaction converts itaconic acid to 3-MTHF at similar to 80% yield with Pd-Re/C catalyst and 1000 psig H-2. Subsequent gas-phase catalytic ring opening and dehydration of 3-MTHF with phosphorus-containing zeolites including P-BEA, P-MFI, and P-SPP (self-pillared pentasil) exhibits 90% selectivity to dienes (70% isoprene, 20% pentadienes) at 20-25% conversion.