Ceria-Based Mixed Oxide Supported CuO: An Efficient Heterogeneous Catalyst for Conversion of Cellulose to Sorbitol

• 作者: Bashir Ahmad Dar Mazahar Farooqui Mushtaq Ahmad Mir Sara Khalid Tariq Ahmad Wani
• 来源期刊: 绿色与可持续化学(英文)
• 学科: 化学
• 关键词: Biomass Copper SUPPORTED Catalyst HYDROGENOLYSIS SORBITOL CERIA
• 年，卷（期）: lsykcxhxyw_2015,（1）
• 页码范围: 15-24
• 页数: 10页
• 分类号: O6

摘要

A series of CeO2-Al2O3, CeO2-TiO2, CeO2-ZrO2, and CeO2-SiO2 mixed-oxide supported copper catalysts were prepared by a modified deposition-precipitation method from ultra dilute aqueous solutions and were investigated for hydrogenolysis of cellulose in aqueous medium, in the presence of hydrogen to produce sorbitol as major product. Among all the catalysts tested in the present work, CuO/CeO2ZrO2?catalyst proved to be the most promising with high conversion (92%) and excellent selectivity (sorbitol 99.1%), at an intermediate reaction temperature of 245°C in a neutral aqueous solution without an aid of liquid phase acid. The catalyst was recyclable in repeated runs and no deactivation was observed even after five reaction cycles. CuO/CeO2-ZrO2 has been characterized by XRD, SEM, TPR and BET surface area techniques.