Catalytic conversion of cellulose into 5-hydroxymethylfurfural in high yields via a two-step process
Catalytic conversion of cellulose into 5-hydroxymethylfurfural in high yields via a two-step process
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通过两步法将纤维素高产率催化转化为 5-羟甲基糠醛
DOI：
10.1007/s10570-011-9568-1
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发表时间：
2011-10-01
期刊：
影响因子：
5.7
通讯作者：
Smith, Richard L., Jr.
中科院分区：
文献类型：
--
作者：
Qi, Xinhua;Watanabe, Masaru;Smith, Richard L., Jr.
5-羟甲基糠醛（5-HMF）是一种重要的可再生塑料和精细化工原料，利用生物质制备5-HMF是一个重要的研究课题。纤维素虽然在自然界中含量丰富，但由于其顽固性和异质性，很难以高产率转化为5-HMF。在这项工作中，我们展示了一个有效的两步方法，用于在温和条件下用离子液体将微晶纤维素转化为5-HMF。在第一步中，通过强酸性阳离子交换树脂在1-乙基-3-甲基咪唑氯化物（[EMIM][Cl]）中逐步加入水，可以从纤维素水解获得80%以上的高葡萄糖产率。在第二步中，从反应混合物中分离树脂并加入CrCl 3，这导致基于纤维素底物的73%的5-HMF产率。该策略可以使生物质实际转化为生物衍生产品。
As a key renewable chemical for plastics and fine chemicals, the preparation of 5-hydroxymethylfurfural (5-HMF) from biomass is an important research topic. Cellulose, although abundant in nature, is difficult to convert to 5-HMF in good yields due to its recalcitrant and heterogeneous nature. In this work, we show an efficient two-step process for converting microcrystalline cellulose into 5-HMF with ionic liquids under mild conditions. In the first step, high glucose yields of above 80% could be obtained from the cellulose hydrolysis by a strong acidic cation exchange resin in 1-ethyl-3-methyl imidazolium chloride ([EMIM][Cl]) with gradual addition of water. In the second step, the resin was separated from the reaction mixture and CrCl3was added which lead to a 5-HMF yield of 73% based on cellulose substrate. The strategy can allow practical conversion of biomass into bio-derived products.