Nature and evolution of Pd catalysts supported on activated carbon fibers during the catalytic reduction of bromate in water

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Nature and evolution of Pd catalysts supported on activated carbon fibers during the catalytic reduction of bromate in water

机译：钯催化剂的性质和演化的支持在催化活性炭纤维减少在水中溴酸盐

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Catalytic hydrogenation of bromate using Pd catalysts supported on activated carbon fibers is a smart solution to treat bromate polluted water. These catalysts have been analyzed by different techniques for an in-deep characterization of the active sites. The in situ X-ray absorption spectroscopy and the CO chemisorption studies showed that Pd-0 nanoparticles with different crystal sizes were generated on the support during hydrogen activation at 200 degrees C and that the PdHx-phase was formed during the cooling to room temperature. As PdHx species formed on Pd-0 nanoparticles are responsible for bromate reduction, the most active catalysts are those having Pd-0 nanoparticles with large crystal sizes, where PdHx species are easily formed. The catalysts are fully stable in succesive reaction runs. It has been also shown that bromate reduction rate depends on the bromate concentration and on the hydrogen partial pressure, with a pseudo-first reaction order towards both reactants.

机译：催化加氢使用Pd的溴酸盐催化剂支持活性炭纤维智能解决方案治疗溴酸盐污染水。这些不同的催化剂进行了分析的深层特征的技术活跃的网站。光谱和化学吸收作用研究表明Pd-0纳米粒子与不同水晶大小生成的支持在氢活化C和200度在冷却,PdHx-phase成立到室温。溴酸Pd-0纳米粒子负责减少,最活跃的催化剂有Pd-0纳米粒子与大晶体大小,PdHx物种很容易形成。催化剂在succesive完全稳定的反应运行。还原速度取决于溴酸盐浓度和氢部分压力,准一反应顺序对这两种反应物。

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《Catalysis science & technology》 |2020年第11期|3646-3653|共8页
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正文语种英语
中图分类汉语教学;
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Room temperature; Grain size(Geology); X-Ray Absorption SpectroscopyEnvironmental TemperatureCatalystscarbon fiberbromatesactivated carbon fiberCATALYTIC REDUCTION;

机译：室温;粒度(地质);x射线吸收SpectroscopyEnvironmentalTemperatureCatalystscarbon fiberbromatesactivated减少碳fiberCATALYTIC;

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Nature and evolution of Pd catalysts supported on activated carbon fibers during the catalytic reduction of bromate in water

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