In a direct-reactive precipitation process for preparation of nano-sized zinc titanante powders, a mixture of ZnCl2 and TiCl4 solutions was used as a reactant and a solution of NaOH as a precipitant. Different concentrations of the precipitan (3, 6, 9mol/L) and different molar ratios of Zn2+ to Ti4+ (1:1.2~2:1) were used to prepare the cubic nano-sized zinc titanante powders. The results demonstrated that when the concentration of the precipitant is 3mol/L and the molar ratio is 1:1, the cubic nano-sized ZnTiO3 with a mean grain size of about 40nm, can be obtained under 600℃ by calcinations; when the concentration of the precipitant is 3mol/L and the molar ratio is 2:1, the Zn2TiO4 powder with a mean grain size of about 90nm, can be obtained under 800℃ by calcinations. And the powders have sphere shape with a narrow PSD.
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1 ] Ozdemir Sibel , Bardskci Tevfik. Hydrogen sulfide removal from coal gas by zinc titanate sorbent [J ] . Separation and Purification Technology , 1999 , 16 (3) : 225 -234
[2 ] Mojtahedi W , Abbasian J . H2S removal from coal gas at elevated temperature and pressure in fluidized bed with zinc titanate sorbents [ J ] . Cyclic Tests Energy Fuels ,1995 , 9 (3) : 429 - 434
[3 ] Susan Lew. High2temperature H2S removal from fuel gases by regeneralde zinc oxide2titanium dioxide sorbents[J ] . Ind Eng Chem Res , 1992(3) : 560 - 565
[4 ] Ishikawa K. Sulfidation and reduction of zinc titanate and zinc oxide sorbents for injection in gasifier exit ducts[J ] .Proc Annu Int Pittsburgh Coal Conf , 1995(12) : 1195 -1200
[5 ] Chang Yee-shin , Chang Yen-hwei , Chen In-gann , Chen Guo-ju. Synthesis and characterization of zinc titanate doped with magnesium[J ] . Solid State Communications ,2003 , 128 : 203 - 208
[6 ] 林元华, 袁方利, 凌远兵,等. 沉淀溶出法制备纳米钛酸锌粉体[J ] . 无机盐工业,1998 , 30 (4) : 13 - 14
[7 ] 姚宏伟, 冯如彬. 沉淀法制备钛酸锌微粉[J ] . 河北建筑科技学院学报,2000 , 17 (1) : 80 - 82
[8 ] 蒋正静, 唐果东, 戴洁. 纳米级钛酸锌粉的制备及其光催化染料降解的应用[ J ] . 光谱实验室, 2002 , 19(5) : 593 - 595
{{custom_fnGroup.title_en}}
Footnotes
{{custom_fn.content}}