CAJ | 학술논문

以 Ni、W 为活性组分，Al2 O3为载体，制备催化剂 Ni-W/Al2 O3，并采用乙二醇后处理未焙烧的催化剂 Ni-W/Al2 O3，得到催化剂 Ni-W/Al2 O3-AT 。通过 X 射线衍射（XRD）、氢气程序升温还原（H2-TPR）、紫外拉曼光谱（LRS）、透射扫描电子显微镜（TEM）、XPS 等表征方法研究催化剂的物化性质。结果表明：催化剂 Ni-W/Al2 O3经乙二醇后处理后，改善了载体氧化铝表面的羟基基团的分布，促使 W 物种以八面体配位多核聚钨酸的形态存在；并有效削弱了载体与活性金属之间的强相互作用，提高了 W 物种的分散度与硫化度，最终使得催化剂形成更多“Ni-W-S”加氢活性相，提高了催化剂 Ni-W/Al2 O3-AT 的加氢活性。与催化剂 Ni-W/Al2 O3相比，催化剂Ni-W/Al2 O3-AT 对焦化轻蜡油具有更高的加氢脱硫、脱氮与芳烃饱和性能，硫质量分数可从6850μg/g 降至10μg/g，氮质量分数由3720μg/g 降至12μg/g，双环以上芳烃质量分数可从25．8％降至3．2％。
이 Ni、W 위활성조분，Al2 O3위재체，제비최화제 Ni-W/Al2 O3，병채용을이순후처리미배소적최화제 Ni-W/Al2 O3，득도최화제 Ni-W/Al2 O3-AT 。통과 X 사선연사（XRD）、경기정서승온환원（H2-TPR）、자외랍만광보（LRS）、투사소묘전자현미경（TEM）、XPS 등표정방법연구최화제적물화성질。결과표명：최화제 Ni-W/Al2 O3경을이순후처리후，개선료재체양화려표면적간기기단적분포，촉사 W 물충이팔면체배위다핵취오산적형태존재；병유효삭약료재체여활성금속지간적강상호작용，제고료 W 물충적분산도여류화도，최종사득최화제형성경다“Ni-W-S”가경활성상，제고료최화제 Ni-W/Al2 O3-AT 적가경활성。여최화제 Ni-W/Al2 O3상비，최화제Ni-W/Al2 O3-AT 대초화경사유구유경고적가경탈류、탈담여방경포화성능，류질량분수가종6850μg/g 강지10μg/g，담질량분수유3720μg/g 강지12μg/g，쌍배이상방경질량분수가종25．8％강지3．2％。
Ni-W/Al2 O3 catalyst was prepared by loading Ni-W metals on Al2 O3 support,and Ni-W/Al2 O3-AT catalyst was prepared by post-treating the uncalcinated Ni-W/Al2 O3 catalyst with glycol solu-tion.The physicochemical properties of the post-treated catalysts were characterized by XRD,H2-TPR, TEM,XPS and UV Raman spectroscopy (LRS).The results show that ethylene glycol not only pro-motes W species to form octahedral coordinated multi-core polytungstic acid by improving the distribu-tion of hydroxyl on the Al2 O3 support surface,but also increases the dispersion and sulfidation degree of W species on the Ni-W/Al2 O3-AT catalyst by weakening the interaction between Al2 O3 support and active metals,resulting in more “Ni-W-S”active phase and higher hydrogenation performance of post-treated catalyst.The Ni-W/Al2 O3-AT catalyst shows higher HDS,HDN and aromatics saturation per-formance than that of Ni-W/Al2 O3 catalyst for the light coking VGO.The sulfur and nitrogen contents can be reduced from 6 850 μg/g and 3 720 μg/g in feed to 10 μg/g and 12 μg/g in product,respectively, the aromatics with ≥2 rings are reduced from 25.8% to 3.2%.