NDLI: Effect of Ni loading and calcination temperature on catalyst performance and catalyst deactivation of Ni/SiO2 in the hydrodechlorination of 1,2‐dichloropropane into propylene

Content Provider	Springer Nature Link
Author	Choi, Young Heon Lee, Wha Young
Copyright Year	2000
Abstract	The hydrodechlorination of 1,2‐dichloropropane (DCPA), a chlorinated organic waste which is produced in the epichlorohydrin process, to propylene was carried out over Ni/SiO2 catalysts. The effects of Ni loading and calcination temperature on catalyst performance and catalyst deactivation of Ni/SiO2 were systematically investigated. The Ni/SiO2 catalysts efficiently converted DCPA into propylene in 95% selectivity or higher. The particle size of Ni on SiO2 was strongly related to the catalyst stability. In terms of the effect of Ni loading, the largest Ni particles on SiO2 showed the best durability against deactivation. A series of TPR and UV‐DRS measurements revealed that nickel hydrosilicate was formed as the result of the interaction between Ni and SiO2. Nickel hydrosilicate was found to be responsible for the catalyst stability leading to low catalyst deactivation. HCl adsorption on Ni/SiO2 was the main reason for catalyst deactivation. HCl modified the crystal structure of metallic Ni to NiCl2 and led to irreversible deactivation and metal sintering.
Starting Page	155
Ending Page	161
Page Count	7
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	67
Issue Number	2-4
e-ISSN	1572879X
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2000-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Industrial Chemistry/Chemical Engineering Catalysis Pharmacy
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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