多级孔钛铝氧化物的制备及其催化氧化脱硫性能
发布时间：2018-08-11 12:15
【摘要】：以月桂酸为模板剂,仲丁醇铝为铝源,三氯化钛为钛源,采用"一锅法"制备了多级孔钛铝氧化物。XRD、FT-IR、N_2吸附脱附及SEM表征结果表明:试样中氧化铝以γ-Al_2O_3相存在,层状结构,TiO_2主要以金红石相存在,具有微介孔多级孔结构,微孔分布在0.50~0.57nm,介孔分布在4.90~10.34nm。以二苯并噻吩(DBT)为探针评价催化剂的催化氧化性能,结果表明:钛铝氧化物由于具有多级孔道结构,有效降低了大分子的传质阻力,是提高DBT转化率的主要因素。优化的反应条件为:钛铝摩尔比为1∶10,催化剂用量为0.332g/10mL,反应温度为60℃,反应时间为2h,该条件下脱硫率最高可达95.1%。
[Abstract]:Using lauric acid as template, aluminum para-butanol as aluminum source, titanium trichloride as titanium source, multiporous titanium oxide. XRDX FT-IRN 2 was prepared by "one pot method". The results of adsorption and desorption and SEM characterization showed that the alumina in the sample was 纬 -Al _ 2O _ 2O _ 3 phase. The layered structure of TiO-2 mainly exists in rutile phase with micromesoporous multilevel pore structure. The micropore distribution is 0.50 ~ 0.57 nm and the mesoporous distribution is 4.90 ~ 10.34 nm. Dibenzothiophene (DBT) was used as a probe to evaluate the catalytic oxidation performance of the catalyst. The results showed that the titanium-aluminum oxide had a multilevel pore structure, which effectively reduced the mass transfer resistance of macromolecules and was the main factor to increase the conversion of DBT. The optimum reaction conditions are as follows: the molar ratio of titanium to aluminum is 1: 10, the amount of catalyst is 0.332 g / 10 mL, the reaction temperature is 60 鈩，
本文编号：2176963
[Abstract]:Using lauric acid as template, aluminum para-butanol as aluminum source, titanium trichloride as titanium source, multiporous titanium oxide. XRDX FT-IRN 2 was prepared by "one pot method". The results of adsorption and desorption and SEM characterization showed that the alumina in the sample was 纬 -Al _ 2O _ 2O _ 3 phase. The layered structure of TiO-2 mainly exists in rutile phase with micromesoporous multilevel pore structure. The micropore distribution is 0.50 ~ 0.57 nm and the mesoporous distribution is 4.90 ~ 10.34 nm. Dibenzothiophene (DBT) was used as a probe to evaluate the catalytic oxidation performance of the catalyst. The results showed that the titanium-aluminum oxide had a multilevel pore structure, which effectively reduced the mass transfer resistance of macromolecules and was the main factor to increase the conversion of DBT. The optimum reaction conditions are as follows: the molar ratio of titanium to aluminum is 1: 10, the amount of catalyst is 0.332 g / 10 mL, the reaction temperature is 60 鈩，
本文编号：2176963
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