| Ni-P/SiO2催化剂晶化过程及其加氢活性研究 |
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| 引用本文： | 盛春,周诗瑶,李和兴,邓景发.Ni-P/SiO2催化剂晶化过程及其加氢活性研究[J].物理化学学报,1998,14(2):164-168. |
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| 作者姓名： | 盛春 周诗瑶 李和兴 邓景发 |
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| 作者单位： | Experimental Center,Shanghai Normal University,Shanghai 200234,Department of Chemistry,Fudan University,Shanghai 200433 |
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| 摘 要： | 采用化学还原法制备了负载型Ｎｉ－Ｐ／ＳｉＯ２非晶态合金催化剂,应用ＩＣＰ、ＢＥＴ、氢氧滴定法、ＸＲＤ、ＳＥＭ、ＸＰＳ研究了上述催化剂在高温晶化过程中的表面结构、表面形貌和表面电子态的变化。测定了Ｎｉ－Ｐ／ＳｉＯ２非晶态合金晶化前后对其液相苯甲醛加氢反应催化活性和选择性。并讨论了非晶态合金催化剂晶化过程中结构变化对催化性能的影响。
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| 关 键 词： | Ni-P/SiO2非晶态催化剂 苯甲醛 催化加氢 晶化 |
| 收稿时间： | 1997-06-03 |
| 修稿时间： | 1997-08-20 |
The Crystallization Process and the Hydrogenation Activity of Ni-P/SiO2 Catalyst |
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| Sheng Chun,Zhou Shi-Yao,Li He-Xing,Deng Jing-Fa.The Crystallization Process and the Hydrogenation Activity of Ni-P/SiO2 Catalyst[J].Acta Physico-Chimica Sinica,1998,14(2):164-168. |
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| Authors: | Sheng Chun Zhou Shi-Yao Li He-Xing Deng Jing-Fa |
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| Institution: | Experimental Center,Shanghai Normal University,Shanghai 200234|Department of Chemistry,Fudan University,Shanghai 200433 |
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| Abstract: | The Ni-P amorphous alloy support on SiO2 (Ni-P/SiO2) was prepared by chemical reduction with NaH2PO2. The amorphous structure of the as-prepared sample was determined by XRD in which a broad peak around 2θ= 45℃ was observed. It's crystallization process was carried out by heating the sample at 350℃ and 600℃ in N2 flow for 2 hours, respectively. The as-prepared catalyst before and after crystallization was characterized by ICP, BET, XRD, XPS and SEM. The change of its catalytic activity before and after crystallization was measured through the liquid benzaldehyde(BA ) hydrogenation in term of the hydrogen uptake rate per gram or per area of nickel or the conversion of BA and TOF values. The change was discussed according to the above characterizations. |
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| Keywords: | 2 amorphous catalyst' ') Ni-P/SiO2 amorphous catalyst" target="_blank">">Ni-P/SiO2 amorphous catalyst Benzaldehyde Catalytic hydrogenation Crystallization |
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