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首页> 外文期刊>Fuel >Preparation of high-dispersion Ni/C catalyst using modified lignite as carbon precursor for catalytic reforming of biomass volatiles
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Preparation of high-dispersion Ni/C catalyst using modified lignite as carbon precursor for catalytic reforming of biomass volatiles

机译：以改性褐煤为碳前驱体制备高分散Ni / C催化剂，用于生物质挥发物的催化重整

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摘要

Lignite is rich in oxygen-containing species (OCSs) and able to load Ni via ion exchange to prepare Ni/C catalyst. However, the OCSs usually exists in the form of organic salts, which can reduce the capacity of Ni ion exchange. In this paper, Shengli lignite (SL) was treated with HCl and HCl/HF to selectively remove the organic salts and insoluble minerals, respectively, and the modified lignite was oxidized by H2O2 to further increase the carboxyl content. The treated lignite was used to prepare Ni/C catalyst and the activity for biomass volatile reforming was evaluated. The results show that demineralization (DM) caused the corrosion of pore structure of SL and gave a Ni/C catalyst with a low specific surface area (SSA) of 222.1 m(2)/g. Oxidation with H2O2 further destroyed the structure of DMSL and provided a Ni/C with the lowest SSA of 141.1 m(2)/g. Acid wash (AW) with HCl resulted in the increase of ion exchange capacity of SL and gave a Ni/C catalyst with larger SSA, higher loading, lower particle size and well dispersion of Ni particle in comparison with SL and DMSL. H2O2 treatment of AWSL significantly increased the amount of carboxyl group to 3.8 mmol/g and gave a Ni/C with the largest SSA of 291.1 m(2)/g, highest Ni loading of 17.3% and smallest Ni crystallite size of 3.4 nm, as well as most active for corncob volatile reforming. (C) 2017 Elsevier Ltd. All rights reserved.
机译：褐煤富含含氧物质（OCS），并且能够通过离子交换负载镍以制备Ni / C催化剂。但是，OCS通常以有机盐形式存在，这会降低Ni离子交换的能力。本文用盐酸和HCl / HF分别处理了胜利褐煤（SL），以选择性地除去有机盐和不溶性矿物，并用H2O2将改性褐煤氧化，以进一步增加羧基含量。用处理过的褐煤制备Ni / C催化剂，并评价生物质挥发重整的活性。结果表明，脱盐（DM）导致SL的孔结构腐蚀，并得到具有222.1 m（2）/ g的低比表面积（SSA）的Ni / C催化剂。用H2O2氧化进一步破坏了DMSL的结构，并提供了具有最低SSA的141.1 m（2）/ g的Ni / C。与SL和DMSL相比，用HCl进行酸洗（AW）可以提高SL的离子交换能力，并提供具有更大的SSA，更高的负载量，更低的粒径和Ni颗粒良好分散的Ni / C催化剂。 H2O2处理的AWSL显着增加了羧基的量至3.8 mmol / g，并提供了一个Ni / C，其最大SSA为291.1 m（2）/ g，最大Ni负载量为17.3％，最小的Ni微晶尺寸为3.4 nm，以及最活跃的玉米芯挥发重整。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Fuel》 |2017年第15期|345-351|共7页
  • 作者

    Ren Jie; Cao Jing-Pei; Zhao Xiao-Yan; Wei Fu; Liu Tian-Long; Fan Xing; Zhao Yun-Peng; Wei Xian-Yong;

  • 作者单位

    China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Lignite; Acid treatment; Oxidation; Ion exchange; Biomass volatile reforming;

    机译：褐煤;酸处理;氧化;离子交换;生物质重整;

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