Facile Preparation and Promising Hydrothermal Stability of Spherical γ-Alumina Support with High Specific Surface Area

Yi Zhang; Yimin Lv; Yufan Mo; Huiyu Li; Pinggui Tang; Dianqing Li; Yongjun Feng

doi:10.3390/catal12111416

Catalysts (Nov 2022)

Facile Preparation and Promising Hydrothermal Stability of Spherical γ-Alumina Support with High Specific Surface Area

Yi Zhang,
Yimin Lv,
Yufan Mo,
Huiyu Li,
Pinggui Tang,
Dianqing Li,
Yongjun Feng

Affiliations

Yi Zhang: State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, China
Yimin Lv: State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, China
Yufan Mo: State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, China
Huiyu Li: State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, China
Pinggui Tang: State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, China
Dianqing Li: State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, China
Yongjun Feng: State Key Laboratory of Chemical Resource Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, China

DOI: https://doi.org/10.3390/catal12111416
Journal volume & issue: Vol. 12, no. 11
p. 1416

Abstract

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It is of great importance to develop a spherical γ-alumina support with high hydrothermal stability to be used in platinum reforming catalyst processes. The porous pseudo-boehmite powder with a high surface area was first synthesized via a simple separate nucleation and aging steps method, and was then used as a precursor to produce a spherical γ-Al2O3 support via an oil–ammonia column method. The as-synthesized pseudo-boehmite has a substantially greater specific surface area of 336.0 m2·g−1 in comparison with the commercial Sasol boehmite powder (293.0 m2·g−1) from Sasol Chemicals. In addition, the as-prepared spherical γ-Al2O3 support derived from the as-synthesized pseudo-boehmite also possesses a higher specific surface area of 280.0 m2·g−1 compared to the corresponding Sasol sample. Moreover, the as-prepared spherical γ-Al2O3 balls demonstrate a much higher specific surface area of 185.0 m2·g−1 compared with the Sasol sample of 142.0 m2·g−1 after hydrothermal tests at 600 °C, suggesting its promising application in the chemical industry.

Published in Catalysts

ISSN: 2073-4344 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology; Science: Chemistry
Website: https://www.mdpi.com/journal/catalysts

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