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Diatomite Stabilized KOH: An Efficient Heterogeneous Catalyst for Cyclopentanone Self‐condensation
Author(s) -
Xu Qianqian,
Sheng Xueru,
Jia Haiyuan,
Li Na,
Zhang Jian,
Shi Haiqiang,
Niu Meihong,
Ping Qingwei
Publication year - 2021
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.202001538
Subject(s) - catalysis , cyclopentanone , aldol condensation , yield (engineering) , chemical engineering , heterogeneous catalysis , materials science , reusability , condensation , chemistry , condensation reaction , organic chemistry , composite material , physics , software , computer science , engineering , thermodynamics , programming language
Aldol condensation of cyclopentanone is an attractive reaction for bio‐jet fuel production. KOH is an efficient homogeneous catalyst for aldol condensation but suffering the problem of separation. In this paper, a heterogeneous catalyst, diatomite stabilized KOH (KOH/diatomite) was prepared in a simple way (dry‐mixed impregnation process), and exhibited good activity (overall yield: 85.0 %) and reusability. To clarify the support effect of diatomite, KOH/SiO 2 catalyst was also prepared. According to characterizations of these two catalysts, we suggest that the excellent catalytic activity of KOH/diatomite can be attributed to the formation of K−O−Si bond. In addition, the impurity elements existed in diatomite (e. g. CaO, Na 2 O, Al 2 O 3 ) and higher BET surface areas may also benefit to this reaction. This study provides a new possibility for converting homogeneous catalyst (KOH) to heterogeneous catalyst (KOH/diatomite). In this way, KOH/diatomite performed excellent catalytic activity and exhibited stable reusability, which can avoid the problem of separation and pollution.