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2004•Journal of Petrochemical UniversitiesRequires access

THE DISPERSION OF WO_3 ON THE SURFACE OF SUPPORTS AND EFFECT ON W_2N SYNTHESIZING

Jingfeng Xu

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Abstract

Supported WO_3 catalysts with γ-Al_2O_3, SiO_2, SiO2-Al_2O_3, HY and SiBAPO-5 supports were prepared by means of impregnation method. The BET surface areas of these supports were examined by BET method, the status of dispersion and the chemical dispersion amount of WO_3 in different supports were also examined by XRD and ammonia-disslove action test. The effect of interaction between WO_3 and support on the dispersibility of WO_3 were discussed. The nitriding of WO_3 was characterized by in-situ TG-DTA technique, meanwhile, the influence of WO_3 nitrided to W_2N caused by interaction of WO_3 and support was studied.

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What this paper is about

Supported WO_3 catalysts with γ-Al_2O_3, SiO_2, SiO2-Al_2O_3, HY and SiBAPO-5 supports were prepared by means of impregnation method. The BET surface areas of these supports were examined by BET method, the status of dispersion and the chemical dispersion amount of WO_3 in different supports were also examined by XRD and ammonia-disslove action test. The effect of interaction between WO_3 and support on the dispersibility of WO_3 were discussed. The nitriding of WO_3 was characterized by in-situ TG-DTA technique, meanwhile, the influence of WO_3 nitrided to W_2N caused by interaction of WO_3 and support was studied.

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Available abstract

Supported WO_3 catalysts with γ-Al_2O_3, SiO_2, SiO2-Al_2O_3, HY and SiBAPO-5 supports were prepared by means of impregnation method. The BET surface areas of these supports were examined by BET method, the status of dispersion and the chemical dispersion amount of WO_3 in different supports were also examined by XRD and ammonia-disslove action test. The effect of interaction between WO_3 and support on the dispersibility of WO_3 were discussed. The nitriding of WO_3 was characterized by in-situ TG-DTA technique, meanwhile, the influence of WO_3 nitrided to W_2N caused by interaction of WO_3 and support was studied.

Key concepts: Nitriding, Dispersion (optics), Materials science, BET theory, Catalysis, Ammonia, Chemical engineering, Nuclear chemistry

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THE DISPERSION OF WO_3 ON THE SURFACE OF SUPPORTS AND EFFECT ON W_2N SYNTHESIZING — Research Paper | ScholarLens