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PBA-derived high-efficiency iron-based catalysts for CO2 hydrogenation

机译:PBA衍生的高效铁基催化剂,用于CO2氢化

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The efficient utilization of CO2 is currently a major concern, and the preparation of a catalyst with high CO2 conversion and product selectivity has become a matter of interest for researchers. Here, we report a series of transition metal-doped CO2 hydrogenation catalysts MFe2O4 (M = Zn, Cu, Ni, Co) with K residue prepared by using PBA as the precursor. The physicochemical properties of the catalysts were characterized by XRD, SEM, TEM, XPS, N2 adsorption and desorption, and H2-TPR, and the catalytic performance was tested. The test results showed that ZnFe2O4 had the highest CO2 conversion of 57.39% and the highest C5+ yield of 39.30% at 320 °C, 3 MPa, H2/CO2 = 3 : 1 and space velocity of 12 000 mL g−1 h−1. ZnFe2O4 showed no significant deactivation after 32 h of continuous operation, indicating its potential as an industrial catalyst.
机译:目前,有效利用CO2是一个主要问题,并且具有高二氧化碳转化率和产品选择性的催化剂的制备已成为研究人员感兴趣的问题。 在这里,我们报告了一系列过渡金属掺杂的CO2氢化催化剂MFE2O4(M = Zn,Cu,Ni,Co),它们通过使用PBA作为前体制备的K残基。 催化剂的物理化学特性以XRD,SEM,TEM,XPS,N2吸附和解吸和H2-TPR为特征,并测试了催化性能。 测试结果表明,ZnFe2O4在320°C,3 MPa,H2/CO2 = 3:1的最高二氧化碳转化率为57.39%,最高C5+产量为39.30%,空间速度为12 000 ml G -1 H -1 。 连续运行32小时后,ZnFe2O4没有明显的失活,表明其作为工业催化剂的潜力。

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