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首页> 外文期刊>Topics in Catalysis >Mesoporous-molecular-sieve-supported Polymer Sorbents for Removing H2S from Hydrogen Gas Streams
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Mesoporous-molecular-sieve-supported Polymer Sorbents for Removing H2S from Hydrogen Gas Streams

机译：介孔分子筛负载的高分子吸附剂脱除氢气流中的H2 S

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摘要

A series of sorbents with a linear polyethylenimine (PEI) supported on the mesoporous molecular sieves, including MCM-41, MCM-48 and SBA-15, have been prepared and used to remove H2S from a model gas containing 0.40 v% of H2S and 20 v% H2 in N2 gas. The sorption was conducted in a fixed-bed system at a temperature range of 22–75 °C, a GHSV range of 337–1,011 h?1 and atmospheric pressure. The effects of the operating temperature, GHSV, the amount of PEI loading and the different molecular sieve supports were studied. A reduction in the temperature and GHSV improves the sorption performance of the supported PEI sorbents. A synergetic effect of the SBA?15 support and PEI on the H2S sorption performance was observed. Loading 50 wt% PEI on SBA-15 gave the best breakthrough capacity, while loading 65 wt% PEI on SBA-15 had the highest saturation capacity. The mesoporous molecular sieve with large pore size and three-dimensional channel structure favors increasing the kinetic capacity of the supported PEI sorbent. In addition, the developed sorbents can be regenerated easily at mild conditions (temperature range of 75–100 °C) and have excellent regenerability and stability. The results indicate that the mesoporous-molecular-sieve-supported polymer sorbents are promising for removing H2S from hydrogen gas streams.
机译：制备了一系列吸附在介孔分子筛上的线性聚乙烯亚胺（PEI）吸附剂，包括MCM-41，MCM-48和SBA-15，并将其用于从含0.40的模型气体中去除H2S v％的H2 S和20 v％的H2 在N2 气体中。吸附在固定床系统中进行，温度范围为22–75°C，GHSV范围为337–1,011 h？1 和大气压。研究了操作温度，GHSV，PEI负载量和不同分子筛载体的影响。温度和GHSV的降低可改善负载型PEI吸附剂的吸附性能。观察到SBA？15载体和PEI对H2S吸附性能的协同作用。在SBA-15上加载50 wt％的PEI可获得最佳的突破能力，而在SBA-15上加载65 wt％的PEI具有最高的饱和能力。具有大孔径和三维通道结构的中孔分子筛有利于增加负载型PEI吸附剂的动力学容量。此外，开发的吸附剂可在温和条件下（温度范围75–100°C）轻松再生，并具有出色的再生性和稳定性。结果表明，介孔分子筛负载的聚合物吸附剂有望去除氢气流中的H2S。

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  • 来源
    《Topics in Catalysis》 |2008年第2期|108-117|共10页
  • 作者

    Xiaoxing Wang; Xiaoliang Ma; Xiaochun Xu; Lu Sun; Chunshun Song;

  • 作者单位

    Clean Fuels and Catalysis Program EMS Energy Institute and Department of Energy ampamp Mineral Engineering The Pennsylvania State University 209 Academic Projects Building University Park PA 16802 USA;

    Clean Fuels and Catalysis Program EMS Energy Institute and Department of Energy ampamp Mineral Engineering The Pennsylvania State University 209 Academic Projects Building University Park PA 16802 USA;

    Clean Fuels and Catalysis Program EMS Energy Institute and Department of Energy ampamp Mineral Engineering The Pennsylvania State University 209 Academic Projects Building University Park PA 16802 USA;

    Clean Fuels and Catalysis Program EMS Energy Institute and Department of Energy ampamp Mineral Engineering The Pennsylvania State University 209 Academic Projects Building University Park PA 16802 USA;

    Clean Fuels and Catalysis Program EMS Energy Institute and Department of Energy ampamp Mineral Engineering The Pennsylvania State University 209 Academic Projects Building University Park PA 16802 USA;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Mesoporous molecular sieves; Sorption; H2S removal; Sorbent; Polyethylenimine;

    机译：介孔分子筛;吸附;H2S去除;吸附剂;聚乙烯亚胺;

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