The present paper covers the synthesis of ZSM-35 molecular sieve with 1,6-hexanediamine as templating agent,the influence of the synthesis conditions, and a discussion concerning the crystal structures of the products.
Metal-organic frameworks（MOFs） are important functional materials. MOF-5（IL）（Zn4O（BDC）3（BDC=1,4-benzenedicarboxylate） was in situ synthesized by the electrochemical method using a tunable ionic liquid（IL）, ...Metal-organic frameworks（MOFs） are important functional materials. MOF-5（IL）（Zn4O（BDC）3（BDC=1,4-benzenedicarboxylate） was in situ synthesized by the electrochemical method using a tunable ionic liquid（IL）, 1-butyl-3-methylimidazolium chloride, as template. The crystallization of distinctly spherical MOF-5（IL） synthsized in ionic liquid by the electrochemical method is attributed to π-π stacking effect, ionic bond, and coordination bond. The analysis results show that the product MOF-5（IL） exhibits better crystallinity and higher thermal stability than MOF-5 generated using the solvothermal method. The cyclic voltammetry reveals that the electrosynthesis reaction is irreversible and controlled by the diffusion. The experiments on methylorange degradation show that the unique structure characteristics of MOF-5（IL） can enhance the photocatalytic ability of Bi OBr. Therefore, MOFs can replace noble metals to improve the photocatalytic properties of bismuth oxyhalide.展开更多
The CeO2/CuO catalysts using different template agent（F68 L64, F127 and P123） were synthesized by the simple template and impregnation method. They were characterized by FESEM, XRD, N2 physisorption and H2-TPR techn...The CeO2/CuO catalysts using different template agent（F68 L64, F127 and P123） were synthesized by the simple template and impregnation method. They were characterized by FESEM, XRD, N2 physisorption and H2-TPR techniques. It is found that the CeO2/CuO catalysts are double pore distribution, and CeO2 can enter into the gap of CuO supports and form the contact interface of copper and cerium. Among the asprepared catalysts, the CeO2/CuO-F127 catalyst displays better activity at lower temperature and the CeO2/CuO-P123 catalyst presents higher activity at higher temperature. The CeO2/CuO-P123 catalyst has the smallest crystallite sizes of CuO and CeO2 as well as the largest size of cubes, which may improve the interaction of copper and cerium and enhance the performance of CO oxidation.展开更多
文摘The present paper covers the synthesis of ZSM-35 molecular sieve with 1,6-hexanediamine as templating agent,the influence of the synthesis conditions, and a discussion concerning the crystal structures of the products.
基金Project(U1261103)jointly supported by the National Natural Science Foundation of China and Shenhua Group Corp
文摘Metal-organic frameworks（MOFs） are important functional materials. MOF-5（IL）（Zn4O（BDC）3（BDC=1,4-benzenedicarboxylate） was in situ synthesized by the electrochemical method using a tunable ionic liquid（IL）, 1-butyl-3-methylimidazolium chloride, as template. The crystallization of distinctly spherical MOF-5（IL） synthsized in ionic liquid by the electrochemical method is attributed to π-π stacking effect, ionic bond, and coordination bond. The analysis results show that the product MOF-5（IL） exhibits better crystallinity and higher thermal stability than MOF-5 generated using the solvothermal method. The cyclic voltammetry reveals that the electrosynthesis reaction is irreversible and controlled by the diffusion. The experiments on methylorange degradation show that the unique structure characteristics of MOF-5（IL） can enhance the photocatalytic ability of Bi OBr. Therefore, MOFs can replace noble metals to improve the photocatalytic properties of bismuth oxyhalide.
基金Project supported by the National Natural Science Foundation of China(21466024)the Natural Science Foundation of Inner Mongolia(2014MS0217,2015MS0209)
文摘The CeO2/CuO catalysts using different template agent（F68 L64, F127 and P123） were synthesized by the simple template and impregnation method. They were characterized by FESEM, XRD, N2 physisorption and H2-TPR techniques. It is found that the CeO2/CuO catalysts are double pore distribution, and CeO2 can enter into the gap of CuO supports and form the contact interface of copper and cerium. Among the asprepared catalysts, the CeO2/CuO-F127 catalyst displays better activity at lower temperature and the CeO2/CuO-P123 catalyst presents higher activity at higher temperature. The CeO2/CuO-P123 catalyst has the smallest crystallite sizes of CuO and CeO2 as well as the largest size of cubes, which may improve the interaction of copper and cerium and enhance the performance of CO oxidation.
