Sulfonated Graphene Oxide as Effective Catalyst for Conversion of 5-( Hydroxymethyl)-2-furfural into Biofuels
Sulfonated Graphene Oxide as Effective Catalyst for Conversion of 5-( Hydroxymethyl)-2-furfural into Biofuels
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DOI：
10.1002/cssc.201301149
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发表时间：
2014-03-01
期刊：
影响因子：
8.4
通讯作者：
Valente, Anabela A.
中科院分区：
文献类型：
--
作者：
Antunes, Margarida M.;Russo, Patricia A.;Valente, Anabela A.
5-（羟甲基）-2-糠醛与乙醇的酸催化反应是在碳水化合物平台内生产生物燃料或燃料添加剂的有前景的途径;具体地，该反应可以得到5-乙氧基甲基糠醛、5-（乙氧基甲基）糠醛二乙基缩醛和/或乙酰丙酸乙酯（bioEs）。结果表明，磺化，部分还原的氧化石墨烯（S-RGO）表现出更上级的催化性能比其他几种酸催化剂，其中包括磺化碳和商业酸性树脂Amberlyst-15，它具有更高的磺酸含量和更强的酸性生产bioE。这归因于磺酸基团和其他类型的酸位点（例如，羧酸），以及由于2D结构而增强的对活性位点的可及性。此外，与S-RGO表面键合的酸性官能团在催化反应条件下比测试的其他固体的酸性官能团更稳定，这允许其有效地再利用。
The acid-catalyzed reaction of 5-(hydroxymethyl)-2-furfural with ethanol is a promising route to produce biofuels or fuel additives within the carbohydrate platform; specifically, this reaction may give 5-ethoxymethylfurfural, 5-(ethoxymethyl)furfural diethylacetal, and/or ethyl levulinate (bioEs). It is shown that sulfonated, partially reduced graphene oxide (S-RGO) exhibits a more superior catalytic performance for the production of bioEs than several other acid catalysts, which include sulfonated carbons and the commercial acid resin Amberlyst-15, which has a much higher sulfonic acid content and stronger acidity. This was attributed to the cooperative effects of the sulfonic acid groups and other types of acid sites (e.g., carboxylic acids), and to the enhanced accessibility to the active sites as a result of the 2D structure. Moreover, the acidic functionalities bonded to the S-RGO surface were more stable under the catalytic reaction conditions than those of the other solids tested, which allowed its efficient reuse.