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| 不同状态甲醇改性活性炭对其表面性质及葡萄糖加氢Ru/C催化性能的影响 | |
| 引用本文： | 徐三魁,王晓栋,李利民,郭楠楠,张允峰.不同状态甲醇改性活性炭对其表面性质及葡萄糖加氢Ru/C催化性能的影响[J].河南工业大学学报(自然科学版),2011,32(4):21-26. |
| 作者姓名： | 徐三魁 王晓栋 李利民 郭楠楠 张允峰 |
| 作者单位： | 1. 河南工业大学材料科学与工程学院,河南郑州450007;郑州大学化学系,河南郑州450052 2. 郑州大学化学系,河南郑州,450052 3. 河南工业大学材料科学与工程学院,河南郑州,450007 |
| 基金项目： | 河南省教育厅自然科学研究基金资助项目(2010A150008) |
| 摘 要： | 采用甲醇液体,甲醇蒸气及超临界甲醇流体等方法对活性炭表面进行了改性处理,并以改性后的活性炭为载体,用等体积水浸渍方法制备了Ru/C催化剂,用N2物理吸附、Boehm滴定、红外光谱(IR)、扫描电镜(SEM)、X光电子能谱(XPS)等手段,研究了超临界甲醇、甲醇蒸气等改性处理方法对活性炭表面孔径结构及表面基团含量的影响,并以葡萄糖加氢生产山梨醇为模型反应对Ru/C催化剂的性能进行了评价.结果表明:甲醇蒸气处理活性炭只能清除活性炭表面的灰分,而超临界甲醇处理活性炭,不仅可清除活性炭表面的灰分,并可有效降低活性炭表面含氧酸性基团的含量,增强载体和活性组分钌间的相互作用,使钌的电子结合能增大,提高Ru/C催化剂的活性.在温度为393 K,氢气压力为4.0 MPa的反应条件下,催化剂的最快反应速率为46.51 mmol.min-1.g-1,与改性前相比提高了0.63倍. |
| 关 键 词： | 超临界 活性炭 钌基催化剂 表面基团 葡萄糖加氢 |
EFFECT OF ACTIVATED CARBON MODIFIED BY METHANOL OF DIFFERENT CONDITIONS ON THE SURFACE PROPERTIES AND THE CATALYTIC PERFORMANCE OF Ru/C CATALYST FOR GLUCOSE HYDROGENATION |
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| XU San-kui,WANG Xiao-dong,LI Li-min,GUO Nan-nan,ZHANG Yun-feng.EFFECT OF ACTIVATED CARBON MODIFIED BY METHANOL OF DIFFERENT CONDITIONS ON THE SURFACE PROPERTIES AND THE CATALYTIC PERFORMANCE OF Ru/C CATALYST FOR GLUCOSE HYDROGENATION[J].Journal of Henan University of Technology Natural Science Edition,2011,32(4):21-26. | |
| Authors: | XU San-kui WANG Xiao-dong LI Li-min GUO Nan-nan ZHANG Yun-feng |
| Affiliation: | XU San-kui1,2,WANG Xiao-dong2,LI Li-min2,GUO Nan-nan2,ZHANG Yun-feng1(1.School of Material Science and Engineering,Henan University of Technology,Zhengzhou 450007,China,2.Department of Chemistry,Zhengzhou University,Zhengzhou 450052,China) |
| Abstract: | In the paper,activated carbon was modified by methanol liquid,methanol vapor and supercriticalmethanol fluid;we prepared Ru/C catalyst using the modified activated carbon as the carrier by soaking in waterwith equal volume,studied the effects of different modification methods on the pore structure and the content ofsurface groups of the modified activated carbon by N2physical adsorption,Boehm titration,IR spectroscopy,SEM,XPS and so on,and evaluated the performance of the Ru/C catalyst based on the model re... |
| Keywords: | supercritical fluid activated carbon ruthenium catalyst surface group glucose hydrogenation |
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