制备方法对Ni/ZnO催化丙三醇重整-氢解性能的影响
采用浸渍法、共沉淀法、水热法和碳微球硬模板法制备了Ni/ZnO催化剂,运用X射线衍射、程序升温还原、透射电子显微镜和氢滴定等手段对其进行了表征,并用于连续固定床反应器中无外加氢气条件下的丙三醇重整-氢解反应.结果表明,在较低空速下,生成的1,2-丙二醇（1,2-PDO）易在Ni分散度较高的催化剂上进一步裂解为乙醇和气相产物;而在较高空速下,其选择性受制于中间产物丙酮醇的加氢.在优化的空速下,Ni分散度越高越有利于1,2-PDO的生成.在Ni分散度最高的Ni/ZnO催化剂上,当丙三醇质量空速为0.84h-1时,1,2-PDO选择性最高,为54.9%,丙三醇转化率为85.4%....
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| Published in | 催化学报 Vol. 33; no. 8; pp. 1266 - 1275 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
复旦大学化学系上海市分子催化和功能材料重点实验室,上海,200433
2012
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-9837 1872-2067 |
| DOI | 10.1016/S1872-2067(11)60405-1 |
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| Abstract | 采用浸渍法、共沉淀法、水热法和碳微球硬模板法制备了Ni/ZnO催化剂,运用X射线衍射、程序升温还原、透射电子显微镜和氢滴定等手段对其进行了表征,并用于连续固定床反应器中无外加氢气条件下的丙三醇重整-氢解反应.结果表明,在较低空速下,生成的1,2-丙二醇（1,2-PDO）易在Ni分散度较高的催化剂上进一步裂解为乙醇和气相产物;而在较高空速下,其选择性受制于中间产物丙酮醇的加氢.在优化的空速下,Ni分散度越高越有利于1,2-PDO的生成.在Ni分散度最高的Ni/ZnO催化剂上,当丙三醇质量空速为0.84h-1时,1,2-PDO选择性最高,为54.9%,丙三醇转化率为85.4%. |
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| AbstractList | O643; 采用浸渍法、共沉淀法、水热法和碳微球硬模板法制备了Ni/ZnO催化剂,运用X射线衍射、程序升温还原、透射电子显微镜和氢滴定等手段对其进行了表征,并用于连续固定床反应器中无外加氢气条件下的丙三醇重整-氢解反应.结果表明,在较低空速下,生成的1,2-丙二醇(1,2-PDO)易在Ni分散度较高的催化剂上进一步裂解为乙醇和气相产物；而在较高空速下,其选择性受制于中间产物丙酮醇的加氢.在优化的空速下,Ni分散度越高越有利于1,2-PDO的生成.在Ni分散度最高的Ni/ZnO催化剂上,当丙三醇质量空速为0.84h-1时,1,2-PDO选择性最高,为54.9％,丙三醇转化率为85.4％. 采用浸渍法、共沉淀法、水热法和碳微球硬模板法制备了Ni/ZnO催化剂,运用X射线衍射、程序升温还原、透射电子显微镜和氢滴定等手段对其进行了表征,并用于连续固定床反应器中无外加氢气条件下的丙三醇重整-氢解反应.结果表明,在较低空速下,生成的1,2-丙二醇（1,2-PDO）易在Ni分散度较高的催化剂上进一步裂解为乙醇和气相产物;而在较高空速下,其选择性受制于中间产物丙酮醇的加氢.在优化的空速下,Ni分散度越高越有利于1,2-PDO的生成.在Ni分散度最高的Ni/ZnO催化剂上,当丙三醇质量空速为0.84h-1时,1,2-PDO选择性最高,为54.9%,丙三醇转化率为85.4%. |
| Author | 胡基业 刘晓钰 王彬 裴燕 乔明华 范康年 |
| AuthorAffiliation | 复旦大学化学系上海市分子催化和功能材料重点实验室,上海200433 |
| AuthorAffiliation_xml | – name: 复旦大学化学系上海市分子催化和功能材料重点实验室,上海,200433 |
| Author_FL | QIAO Minghua HU Jiye WANG Bin LIU Xiaoyu PEI Yan FAN Kangnian |
| Author_FL_xml | – sequence: 1 fullname: HU Jiye – sequence: 2 fullname: LIU Xiaoyu – sequence: 3 fullname: WANG Bin – sequence: 4 fullname: PEI Yan – sequence: 5 fullname: QIAO Minghua – sequence: 6 fullname: FAN Kangnian |
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| DOI | 10.1016/S1872-2067(11)60405-1 |
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| DocumentTitleAlternate | Reforming and Hydrogenolysis of Glycerol over Ni/ZnO Catalysts Prepared by Different Methods |
| DocumentTitle_FL | Reforming and Hydrogenolysis of Glycerol over Ni/ZnO Catalysts Prepared by Different Methods |
| EISSN | 1872-2067 |
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| Keywords | 1,2-丙二醇 重整 丙三醇 分散度 氢解 镍 氧化锌 |
| Language | Chinese |
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| Notes | HU Jiye, LIU Xiaoyu, WANG Bin, PEI Yan, QIAO Minghua＊, FAN Kangnian Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200433, China The catalytic conversion of glycerol to 1,2-propanediol （1,2-PDO） is generally conducted batch-wise in an autoclave in the pres- ence of high pressure H2. The reforming and hydrogenolysis of glycerol to 1,2-PDO over Ni/ZnO catalysts in a continuous flow fixed-bed reactor without added H2 was reported. The Ni/ZnO catalysts were prepared by wetness impregnation （WI）, co-precipitation （CP）, hydro- thermal treatment （HT）, and carbon microsphere hard-templating （CT） methods. The catalysts were characterized by X-ray diffraction （XRD）, temperature-programmed reduction （TPR）, transmission electron microscopy （TEM）, and H2 titration. At a low weight hourly space velocity （WHSV） of glycerol, the 1,2-PDO produced got degraded to ethanol and gas phase products over catalysts with high Ni dispersion, while at a high |
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| PublicationTitle | 催化学报 |
| PublicationTitleAlternate | Chinese Journal of Catalysis |
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| Publisher | 复旦大学化学系上海市分子催化和功能材料重点实验室,上海,200433 |
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| SubjectTerms | 1,2-丙二醇 丙三醇 分散度 氢解 氧化锌 重整 镍 |
| Title | 制备方法对Ni/ZnO催化丙三醇重整-氢解性能的影响 |
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