Screening of mono- and bi-functional catalysts for the one-pot conversion of cellobiose into sorbitol
Screening of mono- and bi-functional catalysts for the one-pot conversion of cellobiose into sorbitol
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DOI：
10.1016/j.cattod.2016.06.017
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发表时间：
2017
期刊：
影响因子：
5.3
通讯作者：
J. R. Almeida;L. D. Vià;P. D. Carà;Y. Carvalho;P. N. Romano;J. Peña;L. Smith;E. Sousa-Aguiar
中科院分区：
文献类型：
--
作者：
J. R. Almeida;L. D. Vià;P. D. Carà;Y. Carvalho;P. N. Romano;J. Peña;L. Smith;E. Sousa-Aguiar
以生产用于一锅法将纤维素转化为山梨糖醇的稳健催化剂为最终目标，首先研究了许多固体酸用于纤维二糖（模型化合物）的水解。特别地，评价了SBA-15的酸官能化、催化剂可回收性和水热稳定性。在工作的第二部分中，描述了Ru纳米颗粒（RuNPs）在Amberlyst 15（A15）上的浸渍，用于制备用于纤维二糖一锅法转化为山梨糖醇的双功能催化剂3%RuNPs/A15。以纤维二糖转化为山梨糖醇为反应体系，考察了5%Ru/C催化剂和5%Ru/C与A15物理混合物的催化性能。当采用双功能催化剂时，反应5 h后山梨醇的收率可达81%。相比之下，使用物理混合物的最佳结果在5小时后得到小于53%的山梨糖醇产率，表明3%RuNP/Amberlyst 15催化剂的双官能度在该反应中起主要作用。
With the ultimate goal of producing robust catalysts for the one-pot conversion of cellulose to sorbitol, a number of solid acids were first investigated for the hydrolysis of cellobiose (model compound). In particular, acid functionalization, catalyst recyclability and hydrothermal stability were evaluated for SBA-15. In the second part of the work, the impregnation of Ru nanoparticles (RuNPs) on the Amberlyst 15 (A15) for the preparation of the bi-functional catalyst 3% RuNPs/A15 for the one-pot conversion of cellobiose into sorbitol is described. The performances of the bi-functional catalyst, 5% Ru/C and the physical mixture of the 5% Ru/C and A15 were evaluated for the conversion of cellobiose to sorbitol. When the bi-functional catalyst was employed, 81% yield of sorbitol was obtained after 5 h of reaction. In contrast, the best result with the physical mixture gave less than 53% yield of sorbitol after 5 h, indicating that the bi-functionality of the 3% RuNPs/Amberlyst 15 catalyst plays a major role in this reaction.