Antimony Substituted Ammonium 12-Molybdophosphoric Acid Catalysts for Gas Phase Chlorobenzene Oxidation

被引：3

作者：

Alshehri, Abdulmohsen ^{[1
]}

Narasimharao, Katabathini ^{[1
]}

机构：

[1] King Abdulaziz Univ, Surface Chem & Catalyt Studies Grp, Dept Chem, Fac Sci, POB 80203, Jeddah 21589, Saudi Arabia

来源：

CATALYSIS LETTERS | 2021年 / 151卷 / 04期

关键词：

(NH4)(3)[PMo12O40; Sb incorporation; Chlorobenzene; Gas phase oxidation; IN-SITU SYNTHESIS; SELECTIVE OXIDATION; AMMOXIDATION FUNCTIONALITY; METHACRYLIC-ACID; PORE STRUCTURE; KEGGIN ANION; DEHYDROGENATION; ISOBUTANE; SALT; PHOSPHATE;

D O I：

10.1007/s10562-020-03372-z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Antimony (Sb) substituted Keggin structured ammonium salt of 12-molybdophsphoric acid (AMPA) materials were synthesized by acid precipitation method. The samples were obtained by increase of Sb atoms from 1 to 3 and corresponding decrease of Mo atoms from 11 to 9. The synthesized materials were thermal treated in the range of 300-500 degrees C. The catalytic performance of thermally treated Sb incorporated AMPA materials were examined for oxidation of chlorobenzene and the catalytic activity of Sb-AMPA samples was compared with activity of bulk AMPA. The materials were thoroughly analyzed by different techniques such as elemental analysis, TG, powder XRD, FTIR, SEM, N-2-physisorption,P-31 MAS NMR, XPS, DR UV-Vis and H-2-TPR techniques. The characterization results clearly indicated that Sb-AMPA samples possessed high thermal stability, relatively large surface area and easy reducibility compared to bulk AMPA. The synthesized samples also possessed high content of surface adsorbed oxygen species, which are responsible for superior catalytic activity. [GRAPHICS] .

引用

页码：1025 / 1037

页数：13