| Ru/CNTs 高效催化转化纤维二糖制备山梨醇 | |
| 谭雪松 ; 邓卫平 ; 张庆红 ; 王野 | |
| 2010-01 | |
| 关键词 | 钌 碳纳米管 纤维二糖 催化加氢 山梨醇 Ru CNTs cellobiose hydrogenation sorbitol |
| 英文摘要 | dwping@grnail. corn ,wangye@xrnu. edu. cn; [中文文摘]针对纤维素的转化,以纤维二糖催化加氢制备山梨醇为模型反应,研究了负载Ⅷ及IB族金属催化剂的催化性能.研究发现,在测试的金属组分中,负载Ru、Ir催化剂显示了较高的转化纤维二糖生成山梨醇性能.在使用碳纳米管(CNTs)、活性炭(AC)、Al_2O_3、HY、SiO_2、CeO_2、MgO等不同载体制备的催化剂中,Ru/Al_2O_3及Ru/CNTs显示较高山梨醇收率.在185℃中性水溶液中,最佳催化剂Ru/CNTs上的山梨醇收率为87%.初步探讨了Ru/CNTs催化剂上纤维二糖转化为山梨醇的反应途径.纤维二糖首先主要通过加氢反应生成3-β-D-吡喃糖醇,而后,3-β-D-吡喃糖醇水解为山梨醇和葡萄糖,而生成的葡萄糖可以迅速加氢转化为山梨醇.山梨醇还可异构为甘露醇和降解生成其它低碳醇. [英文文摘]As a model reaction for cellulose transformation, the conversion of cellohiose was studied over supported metallic Vln and IB group elements catalysts , and Ru and Ir were found effective for the formation of sorbitol. Catalytic performances of catalysts on different supports including CNTs,AC. Alz 03 .SiOz • HY , c eOz• MgO showed that CNTs is the most suitable support for metallic Ru species. and a superior performance obtained was 87 % yield of sorbitol from the conversion of cellobiose over Ru/CNTs catalysts. The reaction route of cel1obiose conversion was proposed. Firstly ,cel1obiose is transformed into 3-{3-D- glucopyranosyl-D- glucitol by hydrogenation. Next.this 3币。- glucopyranosyl-D- glucitol was hydrolyzed to sorbitol and glucose which could be hydrogenated to sorbitol very quickly. However.the sorbtiol could also be converted by degradation or isomerization.; 国家自然科学基金(20625310,20773099,20873110); 国家重点基础研究发展计划(2010CB732303,2005CB221408) |
| 语种 | 中文 |
| 出版者 | 《厦门大学学报(自然科学版)》编辑部 |
| 内容类型 | 期刊论文 |
| 源URL | [http://dspace.xmu.edu.cn/handle/2288/3620]  |
| 专题 | 化学化工－已发表论文 |
| 推荐引用方式 GB/T 7714 | 谭雪松,邓卫平,张庆红,等. Ru/CNTs 高效催化转化纤维二糖制备山梨醇[J],2010. |
| APA | 谭雪松,邓卫平,张庆红,&王野.(2010).Ru/CNTs 高效催化转化纤维二糖制备山梨醇.. |
| MLA | 谭雪松,et al."Ru/CNTs 高效催化转化纤维二糖制备山梨醇".(2010). |
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