Sulfate-Promoted Higher Alcohol Synthesis from CO2 Hydrogenation
Sulfate-Promoted Higher Alcohol Synthesis from CO2 Hydrogenation
复制标题
硫酸盐促进 CO2 加氢合成高级醇
DOI:
10.1021/acssuschemeng.2c02743
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发表时间:
2022-06
期刊:
影响因子:
--
通讯作者:
Guoliang Liu
中科院分区:
文献类型:
--
作者:
Yanqiu Wang;Xinxin Zhang;Xinlin Hong;Guoliang Liu
Sulfur is usually regarded as a catalyst poison for many industrial reactions. Since an increasing number of studies have also reported that sulfate can serve as a promoter for certain reactions, the effects of sulfate on catalysts should be critically treated. Herein, we report a promotion effect of sulfate species on higher alcohol synthesis (HAS) from CO2hydrogenation over a typical KCuFe-based catalyst. It is found that sulfate modification can regulate the hydrogenation capacity and balance of CO dissociated and nondissociated activation, thus optimizing the reaction network of CO2hydrogenation to higher alcohols. After optimization, the 0.6S-KCFZ catalyst with a moderate S doping (0.6 wt %) displays the HA selectivity of 22.9% and HA STY of 50.7 mg gcat–1h–1under the reaction conditions of 320 °C, 5 MPa, and 3 L gcat–1h–1. Furthermore, based on the reaction coupling strategy, we combined 0.6S-KCFZ with CuZnAlZr (CO2reduction to C1 species) to construct a multifunctional catalyst, which showed a superior HAS catalytic performance (173.9 mg gcat–1h–1at GHSV of 12 L gcat–1h–1). This work provides a distinctive example for the insight of sulfate modification on HAS from CO2hydrogenation.
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DOI:
10.1016/j.apcatb.2021.120207
发表时间:
2021-04
期刊:
Applied Catalysis B: Environmental
影响因子:
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