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Effect of Ce/Ca Ratio in Ni/CeO2-ZrO2-CaO Catalysts on High-Purity Hydrogen Production by Sorption-Enhanced Steam Reforming of Acetic Acid and Bio-Oil
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-01-14 , DOI: 10.1021/acs.iecr.9b04758 Danping Li 1, 2 , Huiyuan Xue 1, 2 , Rongrong Hu 1, 2
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-01-14 , DOI: 10.1021/acs.iecr.9b04758 Danping Li 1, 2 , Huiyuan Xue 1, 2 , Rongrong Hu 1, 2
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The sorption-enhanced steam reforming (SESR) of poplar sawdust pyrolysis oil and acetic acid for high-purity hydrogen production was investigated in this present work. The Ni/CeO2-ZrO2-CaO bifunctional materials with different Ce/Ca ratios were prepared and characterized by the analytic techniques of N2 adsorption–desorption measurement, X-ray diffraction, temperature-programmed reduction, temperature-programmed oxidation, and transmission electron microscopy. The effects of the Ce/Ca ratio in Ni/CeO2-ZrO2-CaO catalysts on the CO2 capture abilities and the catalytic behaviors were also discussed. The Ni/Ce1.2Zr1Ca5 catalyst showed an excellent catalytic performance with a purity of H2 up to about 95% even after 15 consecutive cycles for the SESR of acetic acid. It also exhibited an improved catalytic activity for the SESR of poplar sawdust pyrolysis oil. However, after several SESR operations of bio-oil, the carbon deposits and Ni particles sintering could be found on the surface, which might be the dominant deactivation cause for this catalyst.
中文翻译：
Ni / CeO 2 -ZrO 2 -CaO催化剂中Ce / Ca比对乙酸和生物油的吸附强化蒸汽重整制氢高纯度氢气的影响
在本工作中，研究了用于高纯度制氢的杨木屑热解油和乙酸的吸附增强蒸汽重整（SESR）。制备了具有不同Ce / Ca比值的Ni / CeO 2 -ZrO 2 -CaO双功能材料，并通过N 2吸附-解吸测量，X射线衍射，温度程序化还原，温度程序化氧化和透射电子显微镜。还讨论了Ni / CeO 2 -ZrO 2 -CaO催化剂中Ce / Ca比对CO 2捕获能力和催化行为的影响。Ni / Ce 1.2 Zr 1 Ca 5该催化剂显示出优异的催化性能，即使在连续15个连续的乙酸SESR循环后，H 2的纯度仍高达约95％。它还表现出对杨木屑热解油的SESR改善的催化活性。然而，在对生物油进行几次SESR操作后，表面上会发现碳沉积物和Ni颗粒烧结，这可能是该催化剂失活的主要原因。
更新日期：2020-01-14
中文翻译：
Ni / CeO 2 -ZrO 2 -CaO催化剂中Ce / Ca比对乙酸和生物油的吸附强化蒸汽重整制氢高纯度氢气的影响
在本工作中，研究了用于高纯度制氢的杨木屑热解油和乙酸的吸附增强蒸汽重整（SESR）。制备了具有不同Ce / Ca比值的Ni / CeO 2 -ZrO 2 -CaO双功能材料，并通过N 2吸附-解吸测量，X射线衍射，温度程序化还原，温度程序化氧化和透射电子显微镜。还讨论了Ni / CeO 2 -ZrO 2 -CaO催化剂中Ce / Ca比对CO 2捕获能力和催化行为的影响。Ni / Ce 1.2 Zr 1 Ca 5该催化剂显示出优异的催化性能，即使在连续15个连续的乙酸SESR循环后，H 2的纯度仍高达约95％。它还表现出对杨木屑热解油的SESR改善的催化活性。然而，在对生物油进行几次SESR操作后，表面上会发现碳沉积物和Ni颗粒烧结，这可能是该催化剂失活的主要原因。
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