With NH4HCO3 and Al2 (SO4)3 as raw materials,under mild conditions γ-Al2O3 precursor AACH and AlOOH was fabricated by means of conprecipiation,then calcined,macro-mesostructured γ-Al2O3 with large pore volume and high surface area was synthesized.And reconstructing the structure of γ-Al2O3 by ammonium bicarbonate which resulted in the pore size distribution is relatively concentrated.The textural properties of original sample and reconstructed sample were characterized using XRD,FTIR,BET,SEM and TEM.Hydrogenation performance of the different catalysts has been evaluated after 30 h the hydrogenation treating in the miniature fixed bed reactor with Fluid Catalytic Cracking Diesel(FCC)as reaction raw material.The results showed that the conversion in desulfrizatuion,desulfurization and denitrification for NiMoP/γ-Al2O3 catalyst which were prepared on structural reconstruction of γ-Al2O3 support were 98.3％ and 94.1％.Hydrogenation catalyst performance was significantly higher than cata-lysts which were prepared on the traditional structure and before reconstruction of γ-Al2O3 support.%以NH4HCO3和Al2(SO4)3为原料,采用共沉淀法,在温和条件下制备出γ-Al2O3前体为碳酸铝铵(AACH)和无定形的拟薄水铝石(AlOOH),然后焙烧,成功制备出具有高比表面积的介孔-大孔γ-Al2O3载体,并通过NH4HCO3溶液重建γ-Al2O3载体孔结构,使其孔径分布相对集中.利用XRD、吡啶吸附FTIR、N2吸附-脱附、SEM及透射电镜等表征方法对调变前后样品进行表征.以催化裂化柴油(FCC)为原料,在小型固定床反应器上进行30 h的加氢性能评价.结果表明,结构重建后的γ-Al2 O3载体制备的NiMoP/γ-Al2O3催化剂在反应趋于稳定时,其脱硫、脱氮率达到98.3％和94.1％,加氢性能明显高于结构重建前和以传统γ-Al2O3载体制备的催化剂.
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