CAJ | 학술논문

以硝酸镍和乙酸镍为镍前体，用浸渍法分别在空气和氢气氛围活化制得系列Ni/SBA-15催化剂，通过XRD、H2-TPD、N2物理吸附和在线质谱等物理化学手段对催化剂进行了表征，并结合微型高压反应釜萘加氢反应，评价了催化剂的加氢性能。结果表明，氢气氛围活化对硝酸镍为镍前体所制Ni/SBA-15催化剂的镍分散度和活性有显著促进作用，而空气氛围活化对乙酸镍为镍前体所制催化剂有明显促进作用。根据催化剂前体在不同氛围活化时的热分解产物，提出了活化氛围对不同镍前体制得Ni/SBA-15催化剂所产生的作用机理。
이초산얼화을산얼위얼전체，용침지법분별재공기화경기분위활화제득계렬Ni/SBA-15최화제，통과XRD、H2-TPD、N2물리흡부화재선질보등물이화학수단대최화제진행료표정，병결합미형고압반응부내가경반응，평개료최화제적가경성능。결과표명，경기분위활화대초산얼위얼전체소제Ni/SBA-15최화제적얼분산도화활성유현저촉진작용，이공기분위활화대을산얼위얼전체소제최화제유명현촉진작용。근거최화제전체재불동분위활화시적열분해산물，제출료활화분위대불동얼전체제득Ni/SBA-15최화제소산생적작용궤리。
With nickel nitrate and nickel acetate as nickel precursors, a series of Ni/SBA-15 catalysts were prepared by using the impregnation methdo a nd activating in air or hydrogen atmosphere.The Ni/SBA-15 catalysts were characterized with XRD, H2-TPD, N2 physisorption and online mass spectroscopy. Their catalytic properties were evaluated with hydrogenation of naphthalene as a model reaction.It was shown that activation in hydrogen greatly increased the Ni dispersion and catalytic activity of Ni/SBA-15 prepared with nickel nitrate, while activation in air significantly improved the sample prepared with nickel acetate.In terms of the thermal decomposition prdo ucts of the catalyst precursors activated in different atmospheres, the affecting mechanism of the activation atmosphere no the Ni/SBA-15 catla ysts prepared with different nickel precursors was proposed.