A potential catalyst for α-pinene isomerization: a solid superacid

A series of SO 4 2− /TiO 2 solid superacid catalysts were prepared under different conditions. The effect of different preparation conditions on the SO 4 2− /TiO 2 catalyst was investigated by evaluating the change of its crystallinity, chemical structure and acid content. The catalytic performance...

Full description

Saved in:
Bibliographic Details
Published inNew journal of chemistry Vol. 48; no. 18; pp. 882 - 892
Main Authors Meng, Xuan, Chen, Yanqi, Wu, Wenxing, Liu, Naiwang, Shi, Li
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 07.05.2024
Subjects
Ammonia
Catalysts
Fixed beds
Isomerization
Regeneration
Sulfuric acid
Titanium dioxide
Online AccessGet full text

Cover

More Information
Summary:A series of SO 4 2− /TiO 2 solid superacid catalysts were prepared under different conditions. The effect of different preparation conditions on the SO 4 2− /TiO 2 catalyst was investigated by evaluating the change of its crystallinity, chemical structure and acid content. The catalytic performance of the SO 4 2− /TiO 2 catalyst was evaluated by α-pinene isomerization in a continuous fixed bed reactor. When ammonia was used as the precipitation agent, the concentration of sulfuric acid impregnation solution was 2 M, and the calcination temperature was 500 °C, the activity of the SO 4 2− /TiO 2 catalyst reached the maximum, the conversion rate of α-pinene was stable at about 95%, and the selectivity of camphene reached 40%. It was found that the structure and textural properties of the SO 4 2− /TiO 2 catalyst did not change significantly after regeneration by studying the regeneration performance of the SO 4 2− /TiO 2 catalyst. The calcination temperature affects the crystallinity of the catalyst.
ISSN:1144-0546
1369-9261
DOI:10.1039/d3nj05908a