CAJ | 학술논문

采用浸渍法制备了贵金属铱催化剂，用于对-氯硝基苯( p-CNB)催化加氢反应，考察了温度、氢压和添加氨基酸对催化反应的影响。研究表明，添加L-Lysine(赖氨酸)时，催化剂的活性和目标产物(对-氯苯胺， p-CAN)的选择性均显著提高，副反应完全被抑制。 L-Lysine对Ir/γ-Al2 O3贵金属催化剂性能显著的促进作用，可能是由于L-Lysine与催化剂金属活性中心的配位，产生了强烈的协同效应，从而极大的增强了催化剂的催化性能。
채용침지법제비료귀금속의최화제，용우대-록초기분( p-CNB)최화가경반응，고찰료온도、경압화첨가안기산대최화반응적영향。연구표명，첨가L-Lysine(뢰안산)시，최화제적활성화목표산물(대-록분알， p-CAN)적선택성균현저제고，부반응완전피억제。 L-Lysine대Ir/γ-Al2 O3귀금속최화제성능현저적촉진작용，가능시유우L-Lysine여최화제금속활성중심적배위，산생료강렬적협동효응，종이겁대적증강료최화제적최화성능。
A iridium noble metal catalyst was prepared with a isopropylalcohol solution of H2 IrCl6 in impregnatingγ-Al2 O3. The effect of temperature, pressure of hydrogen and amino acids additive on the hydrogenation of p -chloronitrobenzene ( p-CNB ) over Ir/γ-Al2 O3 was investigated. The addition of L-lysine remarkably improved the catalytic activity of Ir/γ-Al2O3 and the selectivity for p-chloroaniline (p-CAN) at high conversion of p-CNB. The presence of L-lysine greatly enhanced the catalyst activity and completely suppressed the formation of by-products. The promotion effect was attributed to the coordination of L-lysine with the active center of the catalyst.