硫化态三组元NiMoP/γ-Al2O3催化剂的TPR表征及噻吩HDS活性的研究
| 外文标题 | Studies on Characterization of Sulfided Tertiary NiMoP/γ-Al2O3 Catalysts by TPR Technique and Their Thiophene HDS Activity |
| 文献类型 | 期刊 |
| 作者 | Qi, XY[1];Xu, CM[2];Liu, ZC[3];Li, WZ[4];Xin, Q[5] |
| 机构 | 北京航空航天大学材料科学与工程学院,;石油大学化工学院,;中国科学院大连化学物理研究所, ↓ |
| 通讯作者 | Qi, XY (reprint author), Beijing Univ Aeronaut & Astronaut, Fac Mat Sci & Engn, Beijing 100083, Peoples R China. |
| 来源信息 | 年:2001卷:22期:5页码范围:841-843 |
| 期刊信息 | 高等学校化学学报影响因子和分区ISSN:0251-0790 |
| 关键词 | 过渡金属硫化物;TPR;HDS |
| 摘要 | A series of sulfided tertiary NiMoP/γ-Al2O3 catalysts with different contents of MoO3 were prepared by using molybdophosphoric acid of Keggin structure(H3PMo12O40) and nickel nitrate as origins of active phase components of molybdenum, phosphorus and nickel, and characterized by TPR technique, with their HDS activity being investigated with thiophene as a model substrate. For the sulfided Mo-0 catalyst containing no nickel as promoter, the only hydrogen sulfide evolution peak Ⅰ is observed at 462 K and attributed to the hydrogenation of the so-called edge sulfur atoms chemisorbed on coordinatively unsaturated(cus) Mox+ sites on the MoS2 phase(MoS2 slab). With the introduction of nickel into the active phase of the sulfided Mo-0 catalyst and with the increase of the molybdenum loading, a new hydrogen sulfide evolution peak Ⅱ gradually develops at the low temperature side of the peak Ⅰ, at the same time accompanied by both the increase of the area ratio of the peak Ⅱ to the peak Ⅰ and the shift of the hydrogen sulfide evolution maximum rate to lower temperatures, which may imply the existence of two kinds of active centers related to molybdenum and nickel respectively and the synergic action between the two centers above. It should be noted that for the sulfided NiMoP/γ-Al2O3 catalysts, the thiophene HDS rate and the quantity of hydrogen sulfide evolved during TPR process increase monotonously with the atomic ratio of molybdenum to nickel in the form of ［n(Ni)+n(Mo)］/n(Ni). On the basis of the results here, the conclusion may be reached that the two kinds of vacancies can be formed on the edge of Ni-Mo-S slab due to the loss of S during TPR process and vacancies or sites related to the H2S evolution peak II should be regarded as the mainly active reaction centers of thiophene HDS. |
| 收录情况 | SCIE(WOS:000168930400035) |
| 所属部门 | 材料科学与工程学院 |
| 链接地址 | http://d.g.wanfangdata.com.cn/Periodical_gdxxhxxb200105042.aspx |
| DOI | 10.3321/j.issn:0251-0790.2001.05.042 |
| 学科 | 化学综合 |
| 被引频次 | 2 |
| 人气指数 | 1 |
| 浏览次数 | 1 |
| 基金 | 国家重点实验室基金 |
全文
影响因子：0.875
中科院分区：
| 一级学科 | 一级分区 | 二级学科 | 二级分区 |
| 化学 | 4 | CHEMISTRY, MULTIDISCIPLINARY化学综合 | 4 |
| 化学 | 4 | CHEMISTRY, MULTIDISCIPLINARY化学综合 | 4 |
JCR分区：
| 学科 | 分区 |
| CHEMISTRY, MULTIDISCIPLINARY | Q3 |
| CHEMISTRY, MULTIDISCIPLINARY | Q4 |
dc:title:硫化态三组元NiMoP/γ-Al2O3催化剂的TPR表征及噻吩HDS活性的研究
dc:creator:齐兴义;徐春明;刘植昌,等
dc:date: publishDate:2001-05-01
dc:type:期刊
dc:format: Media：高等学校化学学报
dc:identifier: LnterrelatedLiterature：高等学校化学学报.2001,22(5),841-843.
dc:identifier:DOI：10.3321/j.issn:0251-0790.2001.05.042
dc: identifier:ISBN:0251-0790
