The La modified Ni-La@mSiO2 core-shell catalyst was prepared by hydration hydrazine reduction and Stöber method.The catalytic performance of the as-prepared catalyst was tested by hydrogenation of benzophenone to benzhydrol.BET,XRD and TEM were used to investigate the structure characteristics of the catalyst.The influence of the reaction time on the selective hydrogenation of benzophenone over Ni-La@mSiO2 were investigated and optimized.The conversion of benzophenone and selectivity of benzhydrol were both over 90%,while the hydrogen pressure was 2.5 MPa,the reaction temperature was 120 ℃ and the reaction time was 120 min.Furthermore,there was no significant decline of the catalyst when it was recycled for five runs,indicating the good stability of this catalyst.
NIU Libo
,
CHU Xiaoning
,
ZHANG Miao
,
CHU Hailong
,
BAI Guoyi
. Preparation of Ni-La@mSiO2 catalyst and its catalytic performance in benzophenone hydrogenation[J]. Journal of Hebei University(Natural Science Edition), 2016
, 36(4)
: 369
-373
.
DOI: 10.3969/j.issn.1000-1565.2016.04.007
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