Boosting Fischer-Tropsch Synthesis via Tuning of N Dopants in TiO2@CN-Supported Ru Catalysts

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外文摘要：Nitrogen(N)-doped carbon materials as metal catalyst supports have attracted significant attention,but the effect of N dopants on catalytic performance remains unclear,especially for complex reaction processes such as Fischer-Tropsch synthesis(FTS).Herein,we engineered ruthenium(Ru)FTS catalysts supported on N-doped carbon overlayers on TiO2 nanoparticles.By regulating the carbonization temperatures,we successfully controlled the types and contents of N dopants to identify their impacts on metal-support interactions(MSI).Our findings revealed that N dopants establish a favorable surface environment for electron transfer from the support to the Ru species.Moreover,pyridinic N demonstrates the highest electron-donating ability,followed by pyrrolic N and graphitic N.In addition to realizing excellent catalytic stability,strengthening the inter-action between Ru sites and N dopants increases the Ru0/Ruδ+ratios to enlarge the active site numbers and surface electron density of Ru species to enhance the strength of adsorbed CO.Consequently,it improves the catalyst's overall performance,encompassing intrinsic and apparent activities,as well as its ability for carbon chain growth.Accordingly,the as-synthesized Ru/TiO2@CN-700 catalyst with abundant pyridine N dopants exhibits a superhigh C5+time yield of 219.4 molCO/(molRu·h)and C5+selectivity of 85.5％.

外文关键词：

Fischer-Tropsch synthesisN-doped carbon materialsRuthenium catalystPyridinic NMetal-N interaction

作者：

Xincheng Li、Yunhao Liu、Dejian Zhao、Shuaishuai Lyu、Jingwei Ye、Xiaoshen Li、Peipei Wu、Ye Tian、Yingtian Zhang、Tong Ding、Song Song、Qingpeng Cheng、Xingang Li

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作者单位：

State Key Laboratory of Chemical Engineering,Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Haihe Laboratory of Sustainable Chemical Transformations,Tianjin Key Laboratory of Applied Catalysis Science and Engineering,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,China

Zhejiang Institute of Tianjin University,Shaoxing 312300,China

Sinopec Research Institute of Petroleum Processing Co.,LTD,Beijing 100083,China

Physical Sciences and Engineering Division,Advanced Membranes and Porous Materials(AMPM)Center,King Abdullah University of Science and Technology(KAUST),23955-6900 Thuwal,Saudi Ar

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基金：

国家重点研发计划国家自然科学基金Program for Introducing Talents of Discipline to Universities of China

项目编号：

2022YFB410180022278298BP0618007

出版年：

2024

DOI：

10.1007/s12209-024-00382-5

天津大学学报(英文版)

天津大学

天津大学学报(英文版)

影响因子：0.343

ISSN：1006-4982

年,卷(期)：2024.30(1)

参考文献量40