| 二苯并噻吩在γ-Al_2O_3负载的β-Mo_2N_(0.78)催化剂上加氢脱硫的研究 |
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| 引用本文： | 龚树文,陈皓侃,李文,李保庆.二苯并噻吩在γ-Al_2O_3负载的β-Mo_2N_(0.78)催化剂上加氢脱硫的研究[J].石油化工,2004,33(2):118-121. |
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| 作者姓名： | 龚树文 陈皓侃 李文 李保庆 |
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| 作者单位： | 中国科学院,山西煤炭化学研究所,煤转化国家重点实验室,山西,太原,030001 |
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| 基金项目： | 山西省青年基金(20001014). |
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| 摘 要： | 采用以N2 -H2 混合气为反应气的程序升温还原氮化反应 ,以γ -Al2 O3 为载体 ,钼酸铵为氧化钼前体 ,合成了γ -Al2 O3 负载的 β -Mo2 N0 78催化剂。以二苯并噻吩 (DBT)为模型化合物 ,考察了催化剂的加氢脱硫 (HDS)催化性能。结果表明 ,DBT在催化剂上的HDS反应有直接氢解脱硫和加氢脱硫两种途径 ;DBT的转化率和产物中环己基苯(CHB)选择性在一定范围内随钼负载量的增大而提高 ;提高反应压力可同时提高HDS反应活性和CHB选择性 ;但升高反应温度 ,只提高HDS反应的活性 ,对选择性影响甚小 ;催化剂的氢气预还原处理使催化剂的活性有所下降 ,但联苯的选择性有所提高
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| 关 键 词： | 催化剂 β-Mo_2N_(0.78)/γ-Al_2O_3 二苯并噻吩 加氢脱硫 |
| 文章编号： | 1000-8144(2004)02-0118-04 |
| 修稿时间： | 2003年9月1日 |
Dibenzothiophene Hydrodesulfurization over β-Mo2N0.78-Alumina Catalyst |
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| Gong Shuwen,Chen Haokan,Li Wen,Li Baoqing.Dibenzothiophene Hydrodesulfurization over β-Mo2N0.78-Alumina Catalyst[J].Petrochemical Technology,2004,33(2):118-121. |
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| Authors: | Gong Shuwen Chen Haokan Li Wen Li Baoqing |
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| Abstract: | Alumina supported β-Mo 2N 0 78 catalysts were synthesized by temper a ture programmed nitridation with gaseous mixture of nitrogen and hydrogen.Hydro desulfurization (HDS) of dibenzothiophene (DBT) on these catalysts was performed in an autoclave reactor.Influences of Mo loading,reaction temperature,pressu re ,and pre-reduction by H 2 on activity and selectivity of β-Mo 2N 0 78 /γ-Al 2O 3 wer e studied.HDS activity and selectivity of cyclohexylbenzene (CHB) increased wit h increasing Mo loading in range of 5%～20%,but they decreased with further incr e asing of Mo loading.HDS activity and selectivity of CHB increased with increasi ng hydrogen pressure.Increase of HDS activity was observed only when increasing reaction temperature.Pre-reduction could deactivate catalyst but increase sel ectivity of biphenyl (BPN). |
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| Keywords: | catalyst β-Mo 2N 0 78 /γ-Al 2O 3 dibenzothiophene hydrodesulfuriz ation |
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