文献类型：期刊文献

英文题名：Highly para-selective alkylation of phenol with alcohols over MgO doped Hβ zeolite

作者：Liu, Kande[1]; Wang, Sitan[1]; Zheng, Lishan[2]; Fang, Yuan[1]; Tao, Ranran[1]; Liu, Naiwang[1]; Cao, Fahai[1]; Meng, Xuan[1]; Shi, Li[1]

机构：[1] The State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Chengdu Natural Gas Chemical Plant General, Petrochina Southwest Oil & Gasfield Company, Chengdu, 610213, China

年份：2025

卷号：398

外文期刊名：Fuel

收录：EI(收录号：20251818349994)

语种：英文

外文关键词：Alkylation - Catalyst selectivity

摘要：As a crucial fine chemical intermediate, the compound 4-TBP holds significant importance in both antioxidant synthesis and the production of various fine chemical products, including resins, flame retardants, surfactants, and ultraviolet absorbers. However, traditional catalysts employed in the production of 4-TBP are plagued by several drawbacks, such as equipment corrosion, environmental contamination, and inadequate thermal stability. In order to overcome these challenges, a series of Hβ-x% MgO catalysts with varying MgO loadings were successfully synthesized using the immersion method. These catalysts were comprehensively characterized through multiple analytical techniques, including XRD, FT-IR, SEM, N2 adsorption–desorption analysis, ICP-OES, Py-IR, 27Al and 29Si MAS NMR and CO2-TPD. These materials were subjected to catalytic evaluation through the phenol alkylation process using tert-butyl alcohol as the alkylating agent. Notably, the Hβ-2.5% MgO catalyst demonstrated superior performance, a remarkable selectivity of 88.2% toward 4-TBP production was attained, which represents a 14.7% improvement over the unmodified Hβ zeolite. The study scope was expanded to incorporate methanol as an alkylation agent, consistent reaction rules were observed, which contributes significantly to the understanding of alcohol-mediated phenol alkylation studies. ? 2025 Elsevier Ltd