Dynamic adsorption of n-heptane/methylhexane/2,2,4-trimethylpentane and refining of high purity n-heptane on UiO-66

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• 作者：QingSheng Zhang ; SiJia Chen ; Lin Zhang ; Qun Cui…
• 关键词：MOF UiO ; 66 ; Reverse shape selectivity ; Paraffin adsorption ; n ; Heptane ; No. 120 solvent oil
• 刊名：Journal of Porous Materials
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：23
• 期：1
• 页码：165-173
• 全文大小：1,212 KB
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• 作者单位：QingSheng Zhang (1)
  SiJia Chen (1)
  Lin Zhang (1)
  Qun Cui (1)
  ZongJian Liu (2)
  HaiYan Wang (1)
  
  1. College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
  2. Nanjing Research Institute, Sinopec Yangzi Petrochemical Co. Ltd., Nanjing, 210048, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Characterization and Evaluation Materials
  Physical Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1573-4854

文摘

Equimolar ternary breakthrough experiments of n-heptane (nHEP), methylcyclohexane (MCH), and 2,2,4-trimethylpentane (224TMP) were carried out at a high hydrocarbon pressure of 10 kPa and a low hydrocarbon pressure of 0.9 kPa with varying adsorption temperature (408–498 K). Binary breakthrough experiments of nHEP/MCH and nHEP/224TMP were performed at 408 K respectively, covering the nHEP partial pressure range from 0.5 to 10 kPa (total hydrocarbon pressure maintains perpetually at nearly 10.5 kPa). The adsorption performance of No. 120 solvent oil and chemical pure nHEP on UiO-66 packed bed were investigated at 408 K. In the ternary experiments (nHEP/MCH/224TMP), the maximum selectivity of MCH/nHEP and 224TMP/nHEP are 5 and 3 respectively. The binary experiments show that increasing the nHEP partial pressure could improve the selectivity of MCH/nHEP and 224TMP/nHEP greatly. High purity nHEP (mass content of more than 99 %) will not be obtained using No. 120 solvent oil (nHEP content of 32.47 %) as raw material directly, but successfully obtained by using chemical pure nHEP (nHEP content of 97.48 %). Keywords MOF UiO-66 Reverse shape selectivity Paraffin adsorption n-Heptane No. 120 solvent oil