CONTINUOUS METHOD FOR PREPARING EXO-TETRAHYDRODICYCLOPENTADIENE

WIPO Patent Application WO/2023/046050

A1

Disclosed is a continuous method for preparing exo-tetrahydrodicyclopentadiene by isomerizing endo-tetrahydrodicyclopentadiene. The method comprises: sequentially passing endo-tetrahydrodicyclopentadiene and hydrogen through a first reaction zone filled with a hydrogenation protective agent and a second reaction zone filled with an isomerization catalyst to carry out a hydro-isomerization reaction, so as to obtain exo-tetrahydrodicyclopentadiene, wherein the hydrogenation protective agent is a supported metal hydrogenation catalyst, and the isomerization catalyst is a metal-modified molecular sieve catalyst. The method may effectively convert endo-tetrahydrodicyclopentadiene into exo-tetrahydrodicyclopentadiene. The conversion rate is greater than 86%, and the selectivity of the target product is greater than 94%. The method is clean and green, may achieve a continuous operation of 2000 h or more, and has industrial application prospects.

JPH1036295	PRODUCTION OF METHYLCYCLOPENTENE-CONTAINING HYDROCARBON
WO/2012/097051	PROCESS FOR ISOMERIZING A FEED STREAM INCLUDING ONE OR MORE C4-C6 HYDROCARBONS

FU ZHAOLIN (CN)
TAO ZHIPING (CN)
XING ENHUI (CN)
LUO YIBIN (CN)
SHU XINGTIAN (CN)
ZHAO JIE (CN)
YAN RUI (CN)
JIA DANDAN (CN)
ZHU ZHONGPENG (CN)
ZHENG WEIPING (CN)

PCT/CN2022/120768

March 30, 2023

September 23, 2022

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CHINA PETROLEUM & CHEM CORP (CN)
SINOPEC RES INSTITUTE OF PETROLEUM PROCESSING CO LTD (CN)

C07C5/13; B01J23/89; B01J29/10; C07C5/03; C07C13/61

CN101244978A	2008-08-20
CN111939967A	2020-11-17
RU2191172C2	2002-10-20
CN111943803A	2020-11-17
US9567270B1	2017-02-14
US8017821B2	2011-09-13
CN101786936A	2010-07-28

CHINA PATENT AGENT (H.K.) LTD. (CN)

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