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Preparation of Pt-S_2O_(8-)~2/ZrO_2-Al_2O_3 catalyst and its catalytic performance for n-pentane isomerization

Xu Zhang

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Abstract

Pt-S2O28- /ZrO2-Al2O3solid superacid catalysts were prepared and were characterized by XRD,SEM,TG-DTA,FT-IR and ICP.The catalysts were evaluated on a lab-scale high pressure microreactor with online chromatogram unit for n-pentane isomerization as a probe reaction.The effects of the weight hourly space velocity,temperature,pressure and hydrogen/pentane mole ratio on the n-pentane isomerization were studied.At reaction temperature of 220℃,pressure of 2.0MPa,n (hydrogen)∶n(pentane molar ratio of)=4∶1,and weight hourly space velocity of 1.5h-1,the npentane conversion was 76.7%,the isopentane yield were 72.5%,isopentane selectivity was 94.5% and liquid product yield was 96.5%.

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What this paper is about

Pt-S2O28- /ZrO2-Al2O3solid superacid catalysts were prepared and were characterized by XRD,SEM,TG-DTA,FT-IR and ICP.The catalysts were evaluated on a lab-scale high pressure microreactor with online chromatogram unit for n-pentane isomerization as a probe reaction.The effects of the weight hourly space velocity,temperature,pressure and hydrogen/pentane mole ratio on the n-pentane isomerization were studied.At reaction temperature of 220℃,pressure of 2.0MPa,n (hydrogen)∶n(pentane molar ratio of)=4∶1,and weight hourly space velocity of 1.5h-1,the npentane conversion was 76.7%,the isopentane yield were 72.5%,isopentane selectivity was 94.5% and liquid product yield was 96.5%.

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Available abstract

Pt-S2O28- /ZrO2-Al2O3solid superacid catalysts were prepared and were characterized by XRD,SEM,TG-DTA,FT-IR and ICP.The catalysts were evaluated on a lab-scale high pressure microreactor with online chromatogram unit for n-pentane isomerization as a probe reaction.The effects of the weight hourly space velocity,temperature,pressure and hydrogen/pentane mole ratio on the n-pentane isomerization were studied.At reaction temperature of 220℃,pressure of 2.0MPa,n (hydrogen)∶n(pentane molar ratio of)=4∶1,and weight hourly space velocity of 1.5h-1,the npentane conversion was 76.7%,the isopentane yield were 72.5%,isopentane selectivity was 94.5% and liquid product yield was 96.5%.

Key concepts: Isopentane, Isomerization, Pentane, Catalysis, Space velocity, Superacid, Chemistry, Yield (engineering)

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Preparation of Pt-S_2O_(8-)~2/ZrO_2-Al_2O_3 catalyst and its catalytic performance for n-pentane isomerization — Research Paper | ScholarLens