CAJ | 학술논문

采用程序升温还原( T)法和低温次磷酸盐法( L)制备了Y-Ni2 P-T和Y-Ni2 P-L催化剂，并采用XRD、BET、CO吸附、XPS等手段对催化剂进行了表征。以二苯并噻吩( DBT)为模型化合物，研究了稀土Y对不同方法制备得到的催化剂加氢脱硫( HDS)性能的影响。结果表明，对T法制备的催化剂，添加稀土Y可以抑制Ni5 P4杂晶的生成，从而促进活性相Ni2 P的生成；添加稀土Y能显著提高催化剂的比表面积，促进小粒径、高度分散的Ni2 P晶粒的生成。 Y-Ni2 P-T催化剂的DBT转化率达到91.0%，比Ni2 P-T催化剂提高了29%。对L法制备的催化剂，添加稀土Y能抑制其他杂晶的生成，提高了Y-Ni2 P-L催化剂对联苯( BP)的选择性，但催化剂的总HDS活性比Ni2 P-L催化剂略有降低。
채용정서승온환원( T)법화저온차린산염법( L)제비료Y-Ni2 P-T화Y-Ni2 P-L최화제，병채용XRD、BET、CO흡부、XPS등수단대최화제진행료표정。이이분병새분( DBT)위모형화합물，연구료희토Y대불동방법제비득도적최화제가경탈류( HDS)성능적영향。결과표명，대T법제비적최화제，첨가희토Y가이억제Ni5 P4잡정적생성，종이촉진활성상Ni2 P적생성；첨가희토Y능현저제고최화제적비표면적，촉진소립경、고도분산적Ni2 P정립적생성。 Y-Ni2 P-T최화제적DBT전화솔체도91.0%，비Ni2 P-T최화제제고료29%。대L법제비적최화제，첨가희토Y능억제기타잡정적생성，제고료Y-Ni2 P-L최화제대련분( BP)적선택성，단최화제적총HDS활성비Ni2 P-L최화제략유강저。
The Y-Ni2 P-T and Y-Ni2 P-L were successfully prepared by temperature programmed reduction method ( T) and low temperature hypophosphite method ( L) , respectively. The catalysts were characterized by X-ray diffraction (XRD), N2 adsorption specific surface area measurements (BET), CO uptake, and X-ray photoelectron spectroscopy (XPS). The effect of the rare earth yttrium (Y) on the HDS activity of catalysts prepared by different method was investigated using dibenzothiophene ( DBT ) as the model compound. The results show that for catalyst prepared by T method, the addition of Y can suppress the formation of the Ni5 P4 phase and thus promote the formation of the active Ni2 P phase. The addition of Y can dramatically increase the surface area and promote the formation of smaller and highly dispersed Ni2 P particles. The DBT conversion of Y-Ni2 P-T catalyst reached 91. 0%, which is 29% higher than that of bulk Ni2 P-T. For catalyst prepared by L method, the addition of Y can suppress the formation of the other impure phases. And the selectivity to BP over Y-Ni2 P-T catalyst is improved, however, the total HDS activity of the catalyst decreases slightly compared with that of Ni2 P-L.