【摘 要】
：
A solid ternary mixture consisting of NaF,silicon and one metal oxide such as La2O3,CeO2,Pr6O11,Nd2O3,and Y2O3 was prepared and used as de-fluorinated reagent f
【机 构】
：
School of Chemistry and Chemical Engineering
【基金项目】
：
This work was financially supported by the National Natural Science Foundation of China
论文部分内容阅读
A solid ternary mixture consisting of NaF,silicon and one metal oxide such as La2O3,CeO2,Pr6O11,Nd2O3,and Y2O3 was prepared and used as de-fluorinated reagent for CF4 decomposition.The results show that 90％ conversion of CF4 can be reached initially over NaF-Si-La2O3,NaF-Si-CeO2,NaF-Si-Nd2O3,and NaF-Si-Y2O3 at 850 ℃.The fresh and used reagents were characterized using XRD and XPS techniques.It was found that the active components of NaF and metal oxides in NaF-Si-CeO2,NaF-Si-Pr6O11,NaF-Si-Nd2O3,and NaF-Si-Y2O3 were transformed into inert phases of mixed metal fluorides and silicates,respectively,resulting in an ineffective utilization of these de-fluorinated reagents,whereas no inert phases from NaF and La2O3 can be observed in the used NaF-Si-La2O3,indicating the NaF-Si-La2O3 reagent could be utilized more efficiently than the other reagents in CF4 decomposition.
其他文献
In this article,the interior layer for a second order nonlinear singularly perturbed differential-difference equation is considered.Using the methods of boundar
By applying the fermionization approach,the inverse version of the bosonization approach,to the Sharma-Tasso-Olver (STO) equation,three simple supersymmetric ex
In this paper dry reforming of methane (DRM) was carried out over nanocrystalline MgAl2O4-supported Ni catalysts with various Ni loadings.Nanocrystalline MgAl2O
The eukaryotic vectors VR1012 expressing survivin or 33 tandem repeats of human mucin 1(MUC1)(VNTRs),namely,VR1012-S and VR1012-VNTR(VNTR=variable number of tan
Two novel organic hole-transporting materials have been synthesized by combination of triphenylamines (TPA) via π-conjugated bonds using Wittig reaction.The st
Vascular endothelial growth factors(VEGFs)respectively bind to each of three receptor tyrosine kinases (RTKs),known as Flt-1,KDR and Flt-4.Since VEGFs and their
Heparin has been considered to be a potentially useful ligand for low-density lipoprotein(LDL)detection and analysis in a clinical context.In order to construct
The homogeneous electrocatalytic oxidation of hydrazine (HZ) has been studied by indigocarmine (IND) as a mediator at the surface of TiO2 nanoparticles modified
We have developed simple,cost effective and environmentally benign protocol for the synthesis of 5-substituted 1H-tetrazoles via [2,3] cycloaddition reaction fr
UV-induced graft polymerization of acrylic acid(AA)on poly(ether ether ketone)(PEEK)films was carried out to introduce-COOH for the subsequent immobilization of