Synthesis of n-Butyl Levulinate Over Caesium Containing Heteropoly Acid Supported Zeolite β Catalysts

IF 2.1 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Surveys from Asia Pub Date : 2023-11-06 DOI:10.1007/s10563-023-09410-1

Kalpana Maheria, Ramesh Kumar Chowdari, Janusz Kozinski, Ajay Kumar Dalai

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Abstract

The aim of the present work is to investigate an environmentally benign method for the catalytic conversion of biomass derived compounds into fine chemicals. Levulinic acid (LA) is one of the key biomass-derived chemicals that can be converted into biofuels and various other value-added chemicals. n -Butyl levulinate ester is an important chemical used in the production of fuel additives, solvents, plasticizing agents, and odorous substances. The work presented here focused on the esterification of n-butyl levulinate by reaction of LA and n-butanol in the presence of synthesized 20% tungstophosphoric acid (TPA) supported zeolite β (TPA-Zβ), CsTPA-Zβ and Cs-Zβ catalysts. Various catalyst characterization techniques have been used, specifically, XRD, SEM–EDS, FT-IR, nitrogen physisorption and NH₃-TPD. The highest % yield of n -butyl levulinate is obtained with shorter reaction time in the case of a 20% TPA supported zeolite β catalyst, calcined at 300 °C. The addition of Cs ions to TPA appears to improve catalytic performance.

Graphical Abstract

Abstract Image

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在含铯杂多酸支撑沸石 β 催化剂上合成乙酰丙酸正丁酯

本研究的目的是探讨一种将生物质衍生化合物催化转化为精细化学品的无害环境方法。乙酰丙酸（LA）是一种重要的生物质衍生化学品，可转化为生物燃料和其他各种增值化学品。乙酰丙酸正丁酯是一种重要的化学品，可用于生产燃料添加剂、溶剂、增塑剂和异味物质。本文的研究重点是在合成的 20% 钨基磷酸（TPA）支撑沸石 β（TPA-Zβ）、CsTPA-Zβ 和 Cs-Zβ 催化剂存在下，通过 LA 和正丁醇的反应对左旋丙酸正丁酯进行酯化。使用了多种催化剂表征技术，特别是 XRD、SEM-EDS、FT-IR、氮物理吸附和 NH3 -TPD。在 300 °C 煅烧 20% 三羟甲基丙烷（TPA）支撑的沸石 β 催化剂时，反应时间较短，左旋丁酸正丁酯的产率最高。在 TPA 中添加铯离子似乎可以提高催化性能。

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来源期刊

Catalysis Surveys from Asia 化学-物理化学

CiteScore

4.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Early dissemination of important findings from Asia which may lead to new concepts in catalyst design is the main aim of this journal. Rapid, invited, short reviews and perspectives from academia and industry will constitute the major part of Catalysis Surveys from Asia . Surveys of recent progress and activities in catalytic science and technology and related areas in Asia will be covered regularly as well. We would appreciate critical comments from colleagues throughout the world about articles in Catalysis Surveys from Asia . If requested and thought appropriate, the comments will be included in the journal. We will be very happy if this journal stimulates global communication between scientists and engineers in the world of catalysis.