Microwave Effect in Hydrolysis of Levoglucosan with a Solid Acid Catalyst for Pyrolysis-Based Cellulose Saccharification

IF 2.5 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
Dr. Takashi Nomura, Prof. Eiji Minami, Prof. Haruo Kawamoto
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Abstract

Pyrolysis-based saccharification consisting of fast pyrolysis followed by hydrolysis of the resulting anhydrosugars such as levoglucosan is a promising method for converting cellulosic biomass into glucose that can be used for producing biofuels and biochemicals. In the present study, hydrolysis of levoglucosan was evaluated in water with a polystyrene sulfonic acid resin (a solid acid catalyst) by heating under microwave irradiation or in an oil bath at 95 °C–120 °C. When the equilibrium temperature of the solution was the same, the conversion rate of levoglucosan was greater under microwave irradiation than in an oil bath. Model experiments indicate that the sulfonyl groups of the solid acid catalyst were selectively heated by microwave irradiation. The temperature of the reaction solution in the vicinity of the catalyst was locally higher than the equilibrium temperature of the solution, which enabled hydrolysis to proceed efficiently.

Abstract Image

Abstract Image

用固体酸催化剂水解左旋葡聚糖中的微波效应,用于基于热解的纤维素糖化。
基于热解的糖化方法包括快速热解,然后水解产生的无水糖(如左旋葡聚糖),这是一种将纤维素生物质转化为葡萄糖的有效方法,葡萄糖可用于生产生物燃料和生物化学品。本研究评估了聚苯乙烯磺酸树脂(一种固体酸催化剂)在微波辐照下或在 95 ℃-120 ℃ 的油浴中加热,在水中水解左旋葡聚糖的情况。当溶液的平衡温度相同时,微波辐照下左旋葡聚糖的转化率高于油浴中的转化率。模型实验表明,微波辐照选择性地加热了固体酸催化剂的磺酰基。催化剂附近反应溶液的温度局部高于溶液的平衡温度,从而使水解作用有效进行。
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来源期刊
ChemistryOpen
ChemistryOpen CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
4.80
自引率
4.30%
发文量
143
审稿时长
1 months
期刊介绍: ChemistryOpen is a multidisciplinary, gold-road open-access, international forum for the publication of outstanding Reviews, Full Papers, and Communications from all areas of chemistry and related fields. It is co-owned by 16 continental European Chemical Societies, who have banded together in the alliance called ChemPubSoc Europe for the purpose of publishing high-quality journals in the field of chemistry and its border disciplines. As some of the governments of the countries represented in ChemPubSoc Europe have strongly recommended that the research conducted with their funding is freely accessible for all readers (Open Access), ChemPubSoc Europe was concerned that no journal for which the ethical standards were monitored by a chemical society was available for such papers. ChemistryOpen fills this gap.
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