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Research On The Catalytic Degradation Performance Of Pd And Mo-based Metal Compounds On Environmental Biomass Pollutants

Posted on:2021-02-25Degree:MasterType:Thesis
Country:ChinaCandidate:C MaFull Text:PDF
GTID:2431330626963808Subject:Environmental engineering
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Nanomaterials are an important component of advanced functional materials,and nanoparticles are an important component of nanomaterials.Therefore,converting optical,electronic,and magnetic properties from nanoscale to macroscale nanoscale usually requires the assembly of these nanoparticles into highly ordered structures.One of the main obstacles to achieving large-scale complex nanoparticle assembly is the synthesis of monodisperse nanoparticles,which have been resolved in the past two decades.The possible colloidal structures resulting from bimodal particle size and charge distribution include quadrilateral,triangle,and simple cube.Since there are more nanoparticles in the collection,it would be complicated to introduce anisotropic particles.As the particle shape changes from a sphere to a rod,an ellipsoid,a polyhedron,a branched rod,and a curved rod,their assembly structures have changed significantly,so they have corresponding sets of optical and electronic properties.This study is divided into two parts,one is the study on the hydrodegradation of lignin ether biomass model molecules using Pd/Al2O3 nanomaterials formed by composites of Al2O3 as a carrier and supported Pd nanoparticles as catalysts.Adsorption kinetics of liquid phase products of Pd/Al2O3 nanomaterials during hydrogenolysis of aryl ether under different high pressure flow conditions.Compare the catalytic performance of p-benzylphenyl ether?BPE?,diphenyl ether?DPE?and phenoxyethylbenzene?PPE?in a flow reactor designed for the hydrogenolysis of ether-based biomass;the second is through water Mo S2/C Nanosheets Synthesized by Thermal Synthesis for Degradation of Imidacloprid?IMD?.All materials were characterized by XRD,N2 adsorption,SEM,TEM,FTIR and other detection methods.The above research results show that Pd/Al2O3 nanomaterials as catalysts have significant effects on the hydrogenation degradation of lignin ether biomass model molecules,with a degradation efficiency of over 95%,which is expected to achieve large-scale application of the production process.The synthesized Mo S2/C nanosheets have large specific surface area and pore size.They are also fast and effective for imidacloprid?IMD?degradation at ultra-low dosage.
Keywords/Search Tags:Hydrogen degradation, Pd/Al2O3, MoS2/C, Lignin model molecules, Nanosheets, IMD, Piezo-catalysis
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