Silicalite-1 zeolite acidification by zinc modification and its catalytic properties for isobutane conversion.

ABSTRACT: A series of Zn-modified Silicalite-1 (S-1) zeolites (Zn _x /S-1) were prepared by the wetness-impregnation method and applied in the catalytic conversion of isobutane. The structure and location of Zn species in Zn _x /S-1 were investigated using UV-Vis and N₂ physical adsorption. The acidity and origin of the acid sites in Zn _x /S-1 were studied by NH₃-temperature programmed desorption and Fourier-transform infrared analysis. The catalytic performance of Zn _x /S-1 for isobutane conversion was investigated in a fixed-bed microreactor. In the experiments, the acidity of S-1 zeolite was dramatically increased by modification with Zn, with both Lewis and Brønsted sites identified in Zn _x

SUBMITTER: Liu G 

PROVIDER: S-EPMC9080551 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature