| 负载型Ni-B非晶态合金催化剂的表征 |
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| 引用本文： | 张晓昕,马爱增,慕旭宏,闵恩泽,黄晓茜,王蓉.负载型Ni-B非晶态合金催化剂的表征[J].物理化学学报,2000,16(2):180-183. |
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| 作者姓名： | 张晓昕 马爱增 慕旭宏 闵恩泽 黄晓茜 王蓉 |
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| 作者单位： | Research Institute of Petroleum Processing,Beijing 100083;University of Science Technology Beijing,Beijing 100083 |
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| 基金项目： | 国家自然科学基金和石化总公司资助项目 |
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| 摘 要： | 作为一种新型的催化加氢材料 ,非晶态合金具有高的活性及选择性 ,近年来引起了人们的注意［１］．尤其将非晶态合金负载化 ,可以提高其表面积和热稳定性 ,抑制非晶态合金的晶化 ,增加了非晶态合金催化剂的工业应用前景．文献已报导了对负载型非晶态合金催化剂的制备、化学及结构修饰、催化性能、催化剂的失活及抗硫性能的研究［２，３］．应该说 ,相比于淬冷法和化学还原法制备的超细微粒非晶态合金 ,负载化有效地提高了非晶态合金的热稳定性．但是 ,当负载型非晶态合金催化剂应用于催化反应时 ,仍存在着结构逐渐变化的过程［４］．本文以Ｎ…
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| 关 键 词： | Ni-B/SiO2非晶态催化剂 晶化 结构表征 |
| 收稿时间： | 1999-03-29 |
| 修稿时间： | 1999年3月29日 |
Structure Characterization of the Supported Amorphous Ni-B/SiO2 Catalysts |
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| Zhang Xiaoxin,Ma Aizeng,Mu Xuhong,Min Enze,Huang Xiaoqian,Wang Rong.Structure Characterization of the Supported Amorphous Ni-B/SiO2 Catalysts[J].Acta Physico-Chimica Sinica,2000,16(2):180-183. |
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| Authors: | Zhang Xiaoxin Ma Aizeng Mu Xuhong Min Enze Huang Xiaoqian Wang Rong |
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| Institution: | Research Institute of Petroleum Processing,Beijing 100083;University of Science Technology Beijing,Beijing 100083 |
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| Abstract: | Amorphous Ni-B/SiO2 catalysts were prepared by chemical reduction of Ni2＋ with KBH4.ICP was used to analyze the composition of alloys.XRD,TEM,SAED and HREM were used to examine the structures of samples fresh and after thermal treatment in different atmospheres.The results indicated that the supported NiB has a higher structural stability than ultrafine NiB amorphous alloy.Low temperature pretreatment in hydrogen can reduce nickel oxide on the surface of catalysts.However,treatment in hydrogen is more favorable than in atmosphere and nitrogen for keeping it in stable state. |
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| Keywords: | Ni-B amorphous catalyst Crystallization Structure characterization |
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