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首页> 外文期刊>Applied Surface Science >Chemisorption Of Hydrogen Sulphide On Zinc Oxide Modified Aluminum-substituted Sba-15
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Chemisorption Of Hydrogen Sulphide On Zinc Oxide Modified Aluminum-substituted Sba-15

机译：氧化锌改性铝取代的Sba-15对硫化氢的化学吸附

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摘要

Aluminum silicate mesoporous material, ZnO/Al-SBA-15, was synthesized by post-synthesis and immobilization method via microwave-assisted route. Desulphurization tests from a gas mixture with low content H_2S were carried out as the probing reaction on these materials. Chemical effects and the nature of the ZnO additive and textural properties on desulphurization capacity were studied over this material. Material was characterized using N_2 adsorption, XRD, TEM, FTIR, XPS, ICP and other techniques. The analysis suggests that the as-synthesized material had well-ordered hexagonal mesopores and was abundant in micropores. ZnO nanoparticles dispersed well and anchored both in the channel and the wall of mesoporous silica. The material with 2.1 wt.% zinc loading presented the highest H_2S uptake capacity. Both micropores and mesopores are active sites for H_2S capture, especially micropores. The enhancement of H_2S removal capacity was attributed to the integration of the pore structure of mesoporous material and the promising desulphurization properties of ZnO nanoparticles. ZnO/Al-SBA-15 could be an effective alternative to remove H_2S from gaseous streams and it also extends the research of mesoporous material.
机译：通过微波辅助合成和固定化的方法合成了硅酸铝介孔材料ZnO / Al-SBA-15。从低含量H_2S的气体混合物中进行脱硫测试，作为对这些材料的探测反应。研究了该材料的化学作用以及ZnO添加剂的性质和织构性质对脱硫能力的影响。使用N_2吸附，XRD，TEM，FTIR，XPS，ICP等技术对材料进行了表征。分析表明，合成后的材料具有规则的六角形中孔，并且在微孔中含量丰富。 ZnO纳米粒子很好地分散并固定在介孔二氧化硅的通道和壁中。锌负载量为2.1 wt。％的材料具有最高的H_2S吸收能力。微孔和中孔都是H_2S捕获的活性位点，尤其是微孔。 H_2S去除能力的提高归因于介孔材料孔隙结构的整合以及ZnO纳米颗粒的有前途的脱硫性能。 ZnO / Al-SBA-15可能是去除气流中H_2S的有效替代方法，它也扩展了介孔材料的研究。

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