Several adsorbents such as 4A-molecular sieve,kaoline,zeolite and active white clay are used to stabilize sodium ferrate (Ⅵ) without sodium hypochlorite.It is proved that 4A-molecular sieve,pure kaoline,pure active w...Several adsorbents such as 4A-molecular sieve,kaoline,zeolite and active white clay are used to stabilize sodium ferrate (Ⅵ) without sodium hypochlorite.It is proved that 4A-molecular sieve,pure kaoline,pure active white clay as well as active white caly prepared by us according to a certain composition can constrain the decomposition of sodium ferrate(Ⅵ).After 30 days,the decomposition percent of sodium ferrate(Ⅵ)adsorbed on these adsorbents is 18.1%,41.7%,3.89%,and 17.5%,respectively.The absorption diagram of desorbed ferrate solution is different from that of pure sodium ferrate solution,and the maxim wavelength is 523.2 nm and 525.2 nm for molecular sivev and active white clay contrasting to 505 nm for zeolite and pure sodium ferrate.展开更多
The hydrolysis of bis(4-nitrophenyl)phosphate(BNPP)catalyzed by cyclotetraenetetraamine-Ce(Ⅲ)complex was studied in this paper at 30℃ and pH7.2.The experimental results indicated that cyclotetraenetetraamine-Ce(Ⅲ)c...The hydrolysis of bis(4-nitrophenyl)phosphate(BNPP)catalyzed by cyclotetraenetetraamine-Ce(Ⅲ)complex was studied in this paper at 30℃ and pH7.2.The experimental results indicated that cyclotetraenetetraamine-Ce(Ⅲ)complex dramatically accelerated the hydrolysis of BNPP.The catatalytic mechanism was proposed in this paper and the kinetic mathematical model of the catalytic reaction was also developed according to the mechanism.The mixed system of cyclotetraenetetraamine-Ce(Ⅲ)complex and CTAB micelles inhibited the hydrolysis of BNPP,while the mixed system of cyclotetraenetetraamine-Ce(Ⅲ)complex and Brij35 micelles accelerated it.展开更多
The dinuclear complexes [Zn（MIMHA）]2（MIMHAH=N-[（1-methylimidazole-2-yl）methyl]-β-alanine） was prepared and characterized by single-crystal X-ray analysis.Crystal data:monlclineic,space group P21/c,a=8.792（2）,...The dinuclear complexes [Zn（MIMHA）]2（MIMHAH=N-[（1-methylimidazole-2-yl）methyl]-β-alanine） was prepared and characterized by single-crystal X-ray analysis.Crystal data:monlclineic,space group P21/c,a=8.792（2）,b=9.267（2）,c=16.942（2）?,β=99.5（2）,V=1351.6（2）?3,and Z=2.The zinc（Ⅱ） atom was co-ordinated in a tetrahedral geometry（N2Cl2）,which positions were occupied by one nitrogen atom and one oxygen atom from the ligand and two chlorine atoms.展开更多
文摘Several adsorbents such as 4A-molecular sieve,kaoline,zeolite and active white clay are used to stabilize sodium ferrate (Ⅵ) without sodium hypochlorite.It is proved that 4A-molecular sieve,pure kaoline,pure active white clay as well as active white caly prepared by us according to a certain composition can constrain the decomposition of sodium ferrate(Ⅵ).After 30 days,the decomposition percent of sodium ferrate(Ⅵ)adsorbed on these adsorbents is 18.1%,41.7%,3.89%,and 17.5%,respectively.The absorption diagram of desorbed ferrate solution is different from that of pure sodium ferrate solution,and the maxim wavelength is 523.2 nm and 525.2 nm for molecular sivev and active white clay contrasting to 505 nm for zeolite and pure sodium ferrate.
文摘The hydrolysis of bis(4-nitrophenyl)phosphate(BNPP)catalyzed by cyclotetraenetetraamine-Ce(Ⅲ)complex was studied in this paper at 30℃ and pH7.2.The experimental results indicated that cyclotetraenetetraamine-Ce(Ⅲ)complex dramatically accelerated the hydrolysis of BNPP.The catatalytic mechanism was proposed in this paper and the kinetic mathematical model of the catalytic reaction was also developed according to the mechanism.The mixed system of cyclotetraenetetraamine-Ce(Ⅲ)complex and CTAB micelles inhibited the hydrolysis of BNPP,while the mixed system of cyclotetraenetetraamine-Ce(Ⅲ)complex and Brij35 micelles accelerated it.
文摘The dinuclear complexes [Zn（MIMHA）]2（MIMHAH=N-[（1-methylimidazole-2-yl）methyl]-β-alanine） was prepared and characterized by single-crystal X-ray analysis.Crystal data:monlclineic,space group P21/c,a=8.792（2）,b=9.267（2）,c=16.942（2）?,β=99.5（2）,V=1351.6（2）?3,and Z=2.The zinc（Ⅱ） atom was co-ordinated in a tetrahedral geometry（N2Cl2）,which positions were occupied by one nitrogen atom and one oxygen atom from the ligand and two chlorine atoms.
