【摘要】：以月桂酸為模板劑,仲丁醇鋁為鋁源,三氯化鈦為鈦源,采用"一鍋法"制備了多級孔鈦鋁氧化物。XRD、FT-IR、N_2吸附脫附及SEM表征結(jié)果表明:試樣中氧化鋁以γ-Al_2O_3相存在,層狀結(jié)構(gòu),TiO_2主要以金紅石相存在,具有微介孔多級孔結(jié)構(gòu),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)為探針評價催化劑的催化氧化性能,結(jié)果表明:鈦鋁氧化物由于具有多級孔道結(jié)構(gòu),有效降低了大分子的傳質(zhì)阻力,是提高DBT轉(zhuǎn)化率的主要因素。優(yōu)化的反應(yīng)條件為:鈦鋁摩爾比為1∶10,催化劑用量為0.332g/10mL,反應(yīng)溫度為60℃,反應(yīng)時間為2h,該條件下脫硫率最高可達(dá)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 緯 -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，

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