本文以NH4BF4为氟源,在N,N-二甲基甲酰胺(DMF)辅助下,合成了不同形貌的ZnOHF微/纳米结构(纳米棒、微米管和纳米片),其中DMF既是溶剂,也是配体调节产物结构。本论文探究了DMF和H2O的比例在合成不同形貌的ZnOHF微/纳米结构过程中的作用。...本文以NH4BF4为氟源,在N,N-二甲基甲酰胺(DMF)辅助下,合成了不同形貌的ZnOHF微/纳米结构(纳米棒、微米管和纳米片),其中DMF既是溶剂,也是配体调节产物结构。本论文探究了DMF和H2O的比例在合成不同形貌的ZnOHF微/纳米结构过程中的作用。在紫外灯辐照下,测定了不同形貌的ZnOHF对罗丹明B溶液的光催化活性,结果表明在12.5 mL DMF/12.5mL H2O溶剂中,得到的微米管状ZnOHF的光催化性质最好。展开更多
A copper-based non-aqueous-phase desulfurization agent is prepared by adding CuCl_(2) to the solvent N,Ndimethylformamide(DMF).Static desulfurization experiments show that the agent has high efficiency.However,the des...A copper-based non-aqueous-phase desulfurization agent is prepared by adding CuCl_(2) to the solvent N,Ndimethylformamide(DMF).Static desulfurization experiments show that the agent has high efficiency.However,the desulfurization reaction leads to the formation of a copper sulfide precipitate.It is found that the addition of chloride ions in the form of hydrochloric acid or potassium chloride prevents the formation of copper sulfide,and elemental sulfur is precipitated instead.The efficient absorption of H2S by the Cu/HCl–DMF agent relies on the rapid coordination of Cu^(2+)with DMF,Cl^(−),and H2S molecules to form a[Cu(DMF)_(n−p)(HS−)_(p)(Cl−)_(m)]_((2−p−m))+complex.The desulfurization agent has a sulfur capacity of up to 9.81 g/L when used in static bubble desulfurization at atmospheric pressure.The system has low viscosity and good chemical and thermal stability.It can be rapidly regenerated through continuous oxidation.After five repetitions of the regeneration procedure,the sulfur capacity reaches more than 91%of the initial capacity,indicating the potential of the system for commercial applications.展开更多
文摘本文以NH4BF4为氟源,在N,N-二甲基甲酰胺(DMF)辅助下,合成了不同形貌的ZnOHF微/纳米结构(纳米棒、微米管和纳米片),其中DMF既是溶剂,也是配体调节产物结构。本论文探究了DMF和H2O的比例在合成不同形貌的ZnOHF微/纳米结构过程中的作用。在紫外灯辐照下,测定了不同形貌的ZnOHF对罗丹明B溶液的光催化活性,结果表明在12.5 mL DMF/12.5mL H2O溶剂中,得到的微米管状ZnOHF的光催化性质最好。
基金the China National Science and Technology Major Project(2016ZX05017)the Sinopec Group Corporation 2020 Science and Technology Project“Organic Sulfur Catalytic Hydrolysis Technology Improves Quality Research”(No.120049-1).
文摘A copper-based non-aqueous-phase desulfurization agent is prepared by adding CuCl_(2) to the solvent N,Ndimethylformamide(DMF).Static desulfurization experiments show that the agent has high efficiency.However,the desulfurization reaction leads to the formation of a copper sulfide precipitate.It is found that the addition of chloride ions in the form of hydrochloric acid or potassium chloride prevents the formation of copper sulfide,and elemental sulfur is precipitated instead.The efficient absorption of H2S by the Cu/HCl–DMF agent relies on the rapid coordination of Cu^(2+)with DMF,Cl^(−),and H2S molecules to form a[Cu(DMF)_(n−p)(HS−)_(p)(Cl−)_(m)]_((2−p−m))+complex.The desulfurization agent has a sulfur capacity of up to 9.81 g/L when used in static bubble desulfurization at atmospheric pressure.The system has low viscosity and good chemical and thermal stability.It can be rapidly regenerated through continuous oxidation.After five repetitions of the regeneration procedure,the sulfur capacity reaches more than 91%of the initial capacity,indicating the potential of the system for commercial applications.
