| 引用本文: | 王凤君,王明昊,高翔,梁财,王延涛,王辉.3A分子筛和Al2O3复合载体催化剂的催化特性[J].哈尔滨工业大学学报,2020,52(1):56.DOI:10.11918/201903178 |
| WANG Fengjun,WANG Minghao,GAO Xiang,LIANG Cai,WANG Yantao,WANG Hui.Catalytic performance of 3A molecular sieve and Al2O3 mixed carriers catalyst[J].Journal of Harbin Institute of Technology,2020,52(1):56.DOI:10.11918/201903178 |
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| 3A分子筛和Al2O3复合载体催化剂的催化特性 |
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王凤君1,王明昊2,高翔1,梁财3,王延涛3,王辉4
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(1.浙江大学 能源工程学院, 杭州 310027;2.高效清洁燃煤电站锅炉国家重点实验室(哈尔滨锅炉厂有限责任公司), 哈尔滨150046; 3.能源热转换及其过程测控教育部重点实验室(东南大学),南京 210096; 4.哈尔滨工业大学 燃烧工程研究所,哈尔滨 150001)
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| 摘要: |
| 为探究3A分子筛和Al2O3复合载体催化剂的结构特征以及对甲苯的催化特性,采用等体积浸渍法制备Al2O3与3A分子筛不同掺混比的载体镍基催化剂,并对催化剂进行XRD、H2-TPR、BET等特性分析,在固定床反应器中对催化剂催化甲苯的特性进行研究. 结果表明:催化剂中活性组分Ni主要以氧化镍NiO和镍铁合金Ni3Fe的形式存在；Al2O3催化剂的比表面积和孔容随着Fe负载量的增加而减小,而不同掺混比催化剂的比表面积和孔容随着γ-Al2O3占比的增加而逐渐增大；甲苯的转化率随着反应温度的增加而逐渐增加,但是随着Fe负载量的增加而先增加后下降；对于不同掺混比的催化剂,随着γ-Al2O3占比的增加,催化剂的活性逐渐增强而后减弱,甲苯的转化率因此先增大后减小；当反应温度为700 ℃,水碳比为2,停留时间0.6 s,γ-Al2O3占比为60%时,甲苯转化率最高. |
| 关键词: 催化剂 3A分子筛 Al2O3 掺混比 固定床 载体 催化 |
| DOI：10.11918/201903178 |
| 分类号:O643；TK09 |
| 文献标识码:A |
| 基金项目: |
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| Catalytic performance of 3A molecular sieve and Al2O3 mixed carriers catalyst |
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WANG Fengjun1,WANG Minghao2,GAO Xiang1,LIANG Cai3,WANG Yantao3,WANG Hui4
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（1.College of Energy Engineering, Zhejiang University, Hangzhou 310027,China; 2.State Key Laboratory of Efficient and Clean Coal-Fired Utility Boilers(Harbin Boiler Company Limited), Harbin 150046, China; 3.Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education(Southeast University),Nanjing 210096, China; 4.Combustion Engineering Research Institute,Harbin Institute of Technology,Harbin 150001, China）
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| Abstract: |
| To research the structural characteristics of 3A molecular sieve and Al2O3 mixed carrier catalyst and the catalytic characteristics of catalyst for toluene, a series of nickel-based catalysts were prepared by equal volume impregnation, and γ-Al2O3 and 3A molecular sieve were mixed as carriers. The catalysts were characterized using XRD, H2-TPR and BET, and the catalytic performance of nickel catalyst for toluene was investigated in a fixed-bed reactor. The results indicated that the active species Ni mainly exists as NiO and Ni3Fe iron-nickel alloy in the catalysts. The specific surface area and pore volume of catalysts went down for the Al2O3 catalysts, and then the toluene conversion rose with the increase of temperature, while the conversion rate of toluene increased firstly and then decreased as the load amount of Fe increased. For the mixing catalysts, the specific surface area and pore volume of catalysts increased, while the activity of catalysts and the conversion of toluene increased firstly and then decreased with the increase of γ-Al2O3 proportion. It has the highest toluene conversion rate, when the reaction temperature is at 700 ℃, the water/carbon ratio is 2, and the residence time is 0.6 s, at same time the mixing ratio of γ-Al2O3 is 60%. |
| Key words: catalysts 3A molecular Al2O3 mixing ratio fix-bed carrier catalysis |
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