[1]王玫,景媛媛,马应海,等.Zn-Ga/HZSM-5分子筛芳构化催化剂[J].石化技术与应用,2022,5:339-342.
WANG Mei,JING Yuan-yuan,Ma Ying-hai,et al.Zn-Ga /HZSM-5 molecular sieve aromatization catalyst[J].Petrochemical technology & application,2022,5:339-342.
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Zn-Ga/HZSM-5分子筛芳构化催化剂(PDF)
《石化技术与应用》[ISSN:1009-0046/CN:62-1138/TQ]
- 期数:
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2022年5期
- 页码:
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339-342
- 栏目:
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- 出版日期:
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2022-09-10
文章信息/Info
- Title:
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Zn-Ga /HZSM-5 molecular sieve aromatization catalyst
- 文章编号:
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1009-0045(2022)05-0339-04
- 作者:
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王玫; 景媛媛; 马应海; 芦琼; 翟莉慧
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中国石油石油化工研究院 兰州化工研究中心,甘肃 兰州 730060
- Author(s):
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WANG Mei; JING Yuan-yuan; Ma Ying-hai; LU Qiong; ZHAI Li-hui
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Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,China
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- 关键词:
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正丁烷; 异丁烷; HZSM-5分子筛; 硝酸锌; 硝酸镓; 改性; 芳构化; 转化率
- Keywords:
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n-butane; iso-butane; HZSM-5 molecular sieve; Zn(NO3)2; Ga(NO3)3; modification; aromatization; conversion
- 分类号:
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TQ 221.1+4
- DOI:
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DOI:10.19909/j.cnki.ISSN1009-0045.2022.05.0339
- 文献标识码:
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B
- 摘要:
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以硝酸锌或硝酸镓为改性剂,纳米HZSM-5分子筛为原料,采用浸渍法可制备单(双)金属改性HZSM-5分子筛催化剂(负载Zn,Ga质量分数分别为6.0%,0.1%)。以正丁烷或异丁烷为原料,在反应温度为400~550 ℃,反应压力为0.8 MPa,质量空速为0.60 h-1的条件下,研究了不同金属离子负载顺序对所制备催化剂芳构化反应性能的影响。结果表明:在反应温度为550 ℃的条件下,以异丁烷为研究对象,采用Zn-Ga/HZSM-5分子筛催化剂,转化率达到93.75%,芳烃选择性达到46.54%;以正丁烷为研究对象,选用Ga-Zn/HZSM-5分子筛催化剂,上述各值依次为62.18%,49.52%;与单金属改性HZSM-5分子筛催化剂相比,双金属改性不仅可以提高异丁烷和正丁烷芳构化反应性能,还能够降低干气收率,抑制小分子烃的生成。
- Abstract:
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The single(double)-metal modified HZSM-5 molecular sieve catalysts(mass fractions of supported Zn and Ga of 6.0% and 0.1%, respectively) were prepared by impregnation method with Zn(NO3)2 or Ga(NO3)3 as modifier and nano-HZSM-5 molecular sieve as raw material.The effects of different metal ion loading sequence on the aromatization performance of the catalyst for n-butane or iso-butane were investigated under the conditions of reaction temperature of 400-550 ℃, reaction pressure of 0.8 MPa,and mass space velocity of 0.60 h-1.The results showed that when using Zn-Ga/HZSM-5 catalyst for iso-butane at 550 ℃, the conversion and aromatics selectivity had reached 93.75%,46.54% respectively.Using Ga-Zn /HZSM-5 molecular sieve catalyst,the mentioned values were 62.18% and 49.52% respectively with n-butane as the research object.Compared with the single-metal modified HZSM-5 molecular sieve catalyst, the double-metal modified HZSM-5 molecular sieve catalyst could not only improve the iso-butane and n-butane aromatization reaction performance, but also reduce the yield of dry gas and inhibit the generation of small molecular hydrocarbons.
参考文献/References
[1] Dooln P C,Pujado P R.Make aromatics Cs from LPG[J].Hydrocarbon Processing,1989,68(9):72-77.[2] 郝代军,朱建华,王国良,等.液化石油气制芳烃技术开发及工业应用[J].现代化工,2006,26(10):55-60.[3] 程牧曦,谭亚南,何霖,等.Ga改性HZSM-5的芳构化反应机理研究进展[J].天然气化工(化学与化工),2016,41(4):85-88.[4] Sadowska K,Wach A,Olejniczak Z,et al.Hierarchinc zeolites:ZSM-5 desilicated with NaOH and NaOH/tetrabutylamine hydroxide[J].Microporous Mesoporous Mater,2013(167):82-88.[5] 赵欣,张瑞珍,王志翔,等.HZSM-5/SAPO-5复合分子筛的制备及其在异丁烷芳构化反应中催化性能研究[J].天然气化工(化学与化工),2018,43(1):29-33.
更新日期/Last Update:
2022-09-10