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Steam treatment of a hollow lithium phosphate catalyst: enhancing carbon deposition resistance and improving the catalytic performance of propylene oxide rearrangement

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dc.creator Wang, Yanan
dc.creator Li, Zhishan
dc.creator Ma, Weihua
dc.creator Kinunda, Grace
dc.creator Qua, Hongxia
dc.creator Zhonga, Qin
dc.date 2018-09-19T11:58:56Z
dc.date 2018-09-19T11:58:56Z
dc.date 2016
dc.date.accessioned 2021-05-03T13:19:55Z
dc.date.available 2021-05-03T13:19:55Z
dc.identifier Y Wang, Z Li, W Ma, G Kinunda, H Qu, Q Zhong - RSC Advances, 2016 - pubs.rsc.org
dc.identifier http://hdl.handle.net/20.500.11810/4911
dc.identifier 10.1039/c6ra09559c
dc.identifier.uri http://hdl.handle.net/20.500.11810/4911
dc.description Carbon deposition is a great problem for most solid acid and base catalysts applied in organic catalytic reactions. Basic lithium phosphate catalyst, when used for propylene oxide rearrangement, is also easily deactivated due to carbon deposition. In this paper, a green surface modification technique of steam treatment was employed to suppress carbon deposition on the basic lithium phosphate catalyst and to improve its catalytic performance. The results showed that the catalyst which was pre-treated with steam at 300 C for 30 minutes exhibited excellent catalytic activity. Furthermore, the amount of carbon deposition was 15.1%, much lower than that of the untreated catalyst (21.5%). The steam treatment could increase the amount of hydroxyl and adjust the distribution of the acid and base sites. The decrease of the amount of Brønsted acid sites resulted in the reduction of carbon deposition. The enhancement of activity could be attributed to the increase of synergistic sites, and this could be due to an increase in the amount of Lewis acid sites and in the strength of the base sites.
dc.language en
dc.publisher Royal Society of Chemistry
dc.title Steam treatment of a hollow lithium phosphate catalyst: enhancing carbon deposition resistance and improving the catalytic performance of propylene oxide rearrangement
dc.type Journal Article, Peer Reviewed


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