CAJ | 학술논문

为了考察复合载体固体超强酸催化剂的异构化性能,研究了催化剂的制备条件,并以正戊烷异构化为探针反应,在高压微反-色谱联合装置上进行了实验.考察了焙烧温度、Al_2O_3,质量分数、硫酸溶液浓度、Pt质量分数、活化温度等制备条件对催化剂性能的影响,采用XRD,BET,FT-IR等手段进行表征.结果表明,最佳制备条件为Al_2O_3质量分数5%,硫酸浸渍液浓度0.5 mol/L,Pt质量分数0.10%,650℃焙烧,300℃活化,所制备的催化剂在220℃时异戊烷收率达61.3%.该催化剂制备简单,绿色环保,具有工业应用潜力.
위료고찰복합재체고체초강산최화제적이구화성능,연구료최화제적제비조건,병이정무완이구화위탐침반응,재고압미반-색보연합장치상진행료실험.고찰료배소온도、Al_2O_3,질량분수、류산용액농도、Pt질량분수、활화온도등제비조건대최화제성능적영향,채용XRD,BET,FT-IR등수단진행표정.결과표명,최가제비조건위Al_2O_3질량분수5%,류산침지액농도0.5 mol/L,Pt질량분수0.10%,650℃배소,300℃활화,소제비적최화제재220℃시이무완수솔체61.3%.해최화제제비간단,록색배보,구유공업응용잠력.
To study the isomerization performance of complex support superacid catalyst, the preparation conditions ofPt-SO_4~(2-)/ZrO_2-AL_2O_3 were investigated. The performance of catalyst was tested on a high-pressure microreactor with online chromatogram unit by using n-pentane isomerization as a probe reaction. The effect of preparation conditions,such as the calcination temperature, the mass fraction of A1_2O_3, the concentration of H_2SO_4, the mass fraction of Pt and activation temperature, etc, on the performance of catalysts was studied. The catalysts were characterized by XRD, BET, FT-IR, et al. The results show that the optimal preparing conditions are A1_2O_3 mass fraction 5% , impregnating with 0. 5 mol/L H_2SO_4 solution, Pt mass fraction 0. 10% , calcining at 650 ℃ and activating at 300 ℃. The isopentane yield can reach 61. 3% at 220 ℃. The catalyst is simple for preparing, environment-friendly and highly potential in industrial application.