采用无定形硅铝对载体进行改性,并制备了一系列催化剂,用N2物理吸附、XRD和NH3 -TPD等手段研究了无定形硅铝组分对催化剂表面物性的影响,并对催化剂进行活性评价.结果表明,添加无定形硅铝组分提高了载体的比表面积,增强了载体的表面酸性.催化剂活性得到较大改善,入口温度降低35℃,产品硫合格.%The catalysts prepared using the carrier modified by amorphous silica-alumina were evaluated. The influence of amorphous silica-alumina on the surface physical properties of the catalysts was investigated by means of N2 adsorption, XRD and NH3-TPD. The results showed that the addition of amorphous silica-alumina enhanced the surface area and acidity of the carrier. The catalytic activity was greatly improved after the introduction of amorphous silica-alumina. The inlet temperature was reduced by 35 ℃ when the sulfur content of the product was qualified.
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