WANG Ruipu, GUO Xinwen, WANG Xiangsheng, et al. Distribution of active silver species of Ag/TS-1 catalyst on direct gas-phase epoxidation of propylene[J]. CIESC Journal, 2005, (8): 1484-1491.
WANG Ruipu, GUO Xinwen, WANG Xiangsheng, et al. Distribution of active silver species of Ag/TS-1 catalyst on direct gas-phase epoxidation of propylene[J]. CIESC Journal, 2005, (8): 1484-1491.DOI:
The effects of silylation treatment and the template of TS-1 on the catalytic properties of Ag/TS-1 were investigated in a fixed bed
quartz reactor at ambient pressure
using the gas-phase epoxidation of propylene with hydrogen and oxygen as a probe. Moreover
the catalysts were characterized by UV-Vis
ICP and TEM.The results showed that
during the direct gas-phase epoxidation of propylene
the catalytic properties of Ag/TS-1 could be improved when TS-1 was silylanized.When 2%SiO2 was loaded on TS-1
2.1% propylene conversion with 98.4% selectivity to propylene oxide (PO) was obtained over Ag/TS-1. The Ag/TS-1 did not show any catalytic selectivity to PO
when the TS-1 powder (with template) was used as the support. Both inner and outer silver species of Ag/TS-1 showed catalytic properties
however
the inner ones were the key active species in the gas-phase epoxidation of propylene.