Efficient synthesis of 5-hydroxymethylfurfural from mannose with a reusable MCM-41-supported tin catalyst†,Catalysis Science & Technology

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Efficient synthesis of 5-hydroxymethylfurfural from mannose with a reusable MCM-41-supported tin catalyst†
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2018-09-17 00:00:00 , DOI: 10.1039/c8cy01630e
Songyan Jia _{1,

2,

3,

4} , Xinjun He _{1,

2,

3,

4} , Jiao Ma _{1,

2,

3,

4} , Kangjun Wang _{1,

2,

3,

4} , Zhanwei Xu _{4,

5,

6,

7,

8} , Z. Conrad Zhang _{4,

5,

6,

7,

8}

Affiliation

The synthesis of furan compounds by renewable carbohydrates has emerged as an important path toward biomass utilization. 5-Hydroxymethylfurfural (5-HMF) and furfural are two typical furan products from cellulosic and hemicellulosic materials, of which the primary components (hexoses and pentoses) undergo selective dehydration. It is worth noting that hemicellulose is rich in not only pentoses but also hexoses, indicating the feasibility of producing 5-HMF and furfural simultaneously. However, research on the production of 5-HMF from hemicellulose-derived hexoses remains lacking. Mannose, a major hexose component of hemicellulose, has been previously found to be a suitable feedstock for 5-HMF production in the presence of homogeneous catalysts, such as metal salts. In this work, Cr-, Al- and Sn/MCM-41 catalysts were prepared by a simple impregnation method and characterized. The conversion of mannose into 5-HMF was evaluated in dimethyl sulfoxide (DMSO) solvent. It was found that the as-synthesized Sn/MCM-41 catalyst showed a superior activity to Cr/MCM-41 and Al/MCM-41. Mannose could be effectively converted into 5-HMF with a yield of ∼45% and ∼88% conversion at 150 °C after 60 min, which were comparable to reported results over heterogeneous catalysts. The as-synthesized Sn/MCM-41 catalyst was also efficient for the conversion of glucose and fructose with reasonable 5-HMF yields. The Sn/MCM-41 catalyst could be reused for eight consecutive cycles without significant loss of catalytic activity.

中文翻译：

使用可重复使用的MCM-41负载锡催化剂从甘露糖高效合成5-羟甲基糠醛†

由可再生碳水化合物合成呋喃化合物已成为生物质利用的重要途径。5-羟甲基糠醛（5-HMF）和糠醛是纤维素和半纤维素材料的两种典型呋喃产物，其主要成分（己糖和戊糖）经过选择性脱水。值得注意的是，半纤维素不仅富含戊糖，而且富含己糖，表明同时生产5-HMF和糠醛的可行性。然而，仍然缺乏关于从半纤维素衍生的己糖生产5-HMF的研究。先前已经发现甘露糖是半纤维素的主要己糖组分，在存在均相催化剂如金属盐的情况下，甘露糖是用于5-HMF生产的合适原料。在这项工作中，Cr- 通过简单的浸渍方法制备了Al-和Sn / MCM-41催化剂并进行了表征。在二甲基亚砜（DMSO）溶剂中评估了甘露糖向5-HMF的转化。发现合成后的Sn / MCM-41催化剂表现出优于Cr / MCM-41和Al / MCM-41的活性。60分钟后，在150°C下，甘露糖可以有效地转化为5-HMF，产率约为〜45％，转化率为〜88％，这与报道的非均相催化剂的结果相当。合成后的Sn / MCM-41催化剂还可以有效地以合理的5-HMF收率转化葡萄糖和果糖。Sn / MCM-41催化剂可重复使用八个连续的周期，而不会显着降低催化活性。发现合成后的Sn / MCM-41催化剂表现出优于Cr / MCM-41和Al / MCM-41的活性。60分钟后，在150°C下，甘露糖可以有效地转化为5-HMF，产率约为〜45％，转化率为〜88％，这与报道的非均相催化剂的结果相当。合成后的Sn / MCM-41催化剂还可以有效地以合理的5-HMF收率转化葡萄糖和果糖。Sn / MCM-41催化剂可重复使用八个连续的周期，而不会显着降低催化活性。发现合成后的Sn / MCM-41催化剂表现出优于Cr / MCM-41和Al / MCM-41的活性。60分钟后，在150°C下，甘露糖可以有效地转化为5-HMF，产率约为〜45％，转化率为〜88％，这与报道的非均相催化剂的结果相当。合成后的Sn / MCM-41催化剂还可以有效地以合理的5-HMF收率转化葡萄糖和果糖。Sn / MCM-41催化剂可重复使用八个连续的周期，而不会显着降低催化活性。合成后的Sn / MCM-41催化剂还可以有效地以合理的5-HMF收率转化葡萄糖和果糖。Sn / MCM-41催化剂可重复使用八个连续的周期，而不会显着降低催化活性。合成后的Sn / MCM-41催化剂还可以有效地以合理的5-HMF收率转化葡萄糖和果糖。Sn / MCM-41催化剂可重复使用八个连续的周期，而不会显着降低催化活性。

更新日期：2018-09-17

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