This paper reviews the advances in the chemical synthesis and application of metal-metalloid amorphous alloy nanoparticles consisting of transition metal(M)and metalloid elements(B,P).After a brief introduction on the...This paper reviews the advances in the chemical synthesis and application of metal-metalloid amorphous alloy nanoparticles consisting of transition metal(M)and metalloid elements(B,P).After a brief introduction on the history of amorphous alloy catalysts,the paper focuses on the properties and characterization of amorphous alloy catalysts,and recent developments in the solution-phase synthesis of amorphous alloy nanoparticles.This paper further outlines the applica-tions of amorphous alloys,with special emphasis on the problems and strategies for the application of amorphous alloy nanoparticles in catalytic reactions.展开更多
Rhodium-based catalysts were prepared by impregnation,treated with glow discharge plasma,character-ized by X-ray diffraction,X-ray photoelectron spectroscopy,H2 temperature-programmed reduction,H2 temperature-programm...Rhodium-based catalysts were prepared by impregnation,treated with glow discharge plasma,character-ized by X-ray diffraction,X-ray photoelectron spectroscopy,H2 temperature-programmed reduction,H2 temperature-programmed desorption and CO temperature-programmed desorption,and investigated for oxygenate synthesis from CO hydrogenation.Based on the characterization results,plasma treatment endowed the samples with smaller particle size,higher dispersion of active components,and an enrichment of active components on the surface as well.As a result,the reducibility and adsorption properties were modified.In cata-lytic tests,the catalytic activity for CO hydrogenation over the samples treated by plasma was improved remarkably:the conversion of CO and the yield of oxygenates increased at most by a factor of 78.62%and 51.96%,respectively,while the selectivity of ethanol and methanol in the oxygenates was enhanced as well.展开更多
The hydrogen fuel cell is a promising option as a future energy resource and the production of hydrogen is mainly depended on fossil fuels now.In this paper,methanol reforming to produce H2 through dielectric-barrier ...The hydrogen fuel cell is a promising option as a future energy resource and the production of hydrogen is mainly depended on fossil fuels now.In this paper,methanol reforming to produce H2 through dielectric-barrier discharge(DBD)plasma reaction was studied.Effects of the power supply parameters,reactor parameters and process conditions on conversion of methanol and distribution of products were investigated.The best reaction conditions were following:input power(45 W),material of inner electrode(stainless steel),discharge gap(3.40 mm),length of reaction zone(90.00 mm),dielectric thickness(1.25 mm),and methanol content(37.65%).The highest conversion of methanol and the yield of H2 were 82.38%and 27.43%,respectively.展开更多
基金the support from the National Natural Science Foundation of China(52130102)the National Key Research and Development Program of China(2019YFA0209900)+1 种基金the Research Grants Council of Hong Kong(R7066-18)the Innovation and Technology Fund(MHP/064/20)。
基金supported by the National Natural Science Foundation of China(Grants No.20403009 and No.20233030)the Key Project of Chinese Ministry of Education(No.105045)Open Foundation of State Key Laboratory of Heavy Oil Processing.
文摘This paper reviews the advances in the chemical synthesis and application of metal-metalloid amorphous alloy nanoparticles consisting of transition metal(M)and metalloid elements(B,P).After a brief introduction on the history of amorphous alloy catalysts,the paper focuses on the properties and characterization of amorphous alloy catalysts,and recent developments in the solution-phase synthesis of amorphous alloy nanoparticles.This paper further outlines the applica-tions of amorphous alloys,with special emphasis on the problems and strategies for the application of amorphous alloy nanoparticles in catalytic reactions.
基金supported by the National Natural Science Foundation of China(Grant No.20590360)the Innovation Foundation of Sichuan University(2005CF07)+1 种基金the Ministry of Science and Technology of China(Grant No.2005CB221406)the New Century Excellent Talent Project of Ministry of Education of China(NCET-05-783).
文摘Rhodium-based catalysts were prepared by impregnation,treated with glow discharge plasma,character-ized by X-ray diffraction,X-ray photoelectron spectroscopy,H2 temperature-programmed reduction,H2 temperature-programmed desorption and CO temperature-programmed desorption,and investigated for oxygenate synthesis from CO hydrogenation.Based on the characterization results,plasma treatment endowed the samples with smaller particle size,higher dispersion of active components,and an enrichment of active components on the surface as well.As a result,the reducibility and adsorption properties were modified.In cata-lytic tests,the catalytic activity for CO hydrogenation over the samples treated by plasma was improved remarkably:the conversion of CO and the yield of oxygenates increased at most by a factor of 78.62%and 51.96%,respectively,while the selectivity of ethanol and methanol in the oxygenates was enhanced as well.
基金supported by the National Natural Science Foundation of China(Grant No.20606023).
文摘The hydrogen fuel cell is a promising option as a future energy resource and the production of hydrogen is mainly depended on fossil fuels now.In this paper,methanol reforming to produce H2 through dielectric-barrier discharge(DBD)plasma reaction was studied.Effects of the power supply parameters,reactor parameters and process conditions on conversion of methanol and distribution of products were investigated.The best reaction conditions were following:input power(45 W),material of inner electrode(stainless steel),discharge gap(3.40 mm),length of reaction zone(90.00 mm),dielectric thickness(1.25 mm),and methanol content(37.65%).The highest conversion of methanol and the yield of H2 were 82.38%and 27.43%,respectively.
