催化学报
催化學報
최화학보
CHINESE JOURNAL OF CATALYSIS
2014年
3期
342-350
,共9页
钴羰基簇合物%费托合成%前驱体%浸渍法
鈷羰基簇閤物%費託閤成%前驅體%浸漬法
고탄기족합물%비탁합성%전구체%침지법
Cobalt carbonyl cluster%Fischer-Tropsch synthesis%Precursor%Impregnation
以含羧酸配体的钴羰基簇合物Co2(CO)6HCCCOOH, Co3(CO)9CCH2COOH, Co4(CO)10HCCCOOH 为前驱体,γ-Al2O3为载体,通过浸渍法制备了一系列催化剂；同时以Co(NO3)2作为前驱体制备了参比催化剂.对制备的催化剂进行了费托反应性能评价,并用透射电子显微镜、氨程序升温脱附和傅里叶变换红外光谱等手段对催化剂进行了表征.结果发现,不同前驱体制备的催化剂对载体上Co的分布具有明显影响,进而影响催化剂活性.反应结果表明,不同前驱体制备的催化剂上CO转化率及C5+选择性顺序为Co3(CO)9CCH2COOH > Co2(CO)6HCCCOOH > Co4(CO)10HCCCOOH > Co(NO3)2.
以含羧痠配體的鈷羰基簇閤物Co2(CO)6HCCCOOH, Co3(CO)9CCH2COOH, Co4(CO)10HCCCOOH 為前驅體,γ-Al2O3為載體,通過浸漬法製備瞭一繫列催化劑；同時以Co(NO3)2作為前驅體製備瞭參比催化劑.對製備的催化劑進行瞭費託反應性能評價,併用透射電子顯微鏡、氨程序升溫脫附和傅裏葉變換紅外光譜等手段對催化劑進行瞭錶徵.結果髮現,不同前驅體製備的催化劑對載體上Co的分佈具有明顯影響,進而影響催化劑活性.反應結果錶明,不同前驅體製備的催化劑上CO轉化率及C5+選擇性順序為Co3(CO)9CCH2COOH > Co2(CO)6HCCCOOH > Co4(CO)10HCCCOOH > Co(NO3)2.
이함최산배체적고탄기족합물Co2(CO)6HCCCOOH, Co3(CO)9CCH2COOH, Co4(CO)10HCCCOOH 위전구체,γ-Al2O3위재체,통과침지법제비료일계렬최화제；동시이Co(NO3)2작위전구체제비료삼비최화제.대제비적최화제진행료비탁반응성능평개,병용투사전자현미경、안정서승온탈부화부리협변환홍외광보등수단대최화제진행료표정.결과발현,불동전구체제비적최화제대재체상Co적분포구유명현영향,진이영향최화제활성.반응결과표명,불동전구체제비적최화제상CO전화솔급C5+선택성순서위Co3(CO)9CCH2COOH > Co2(CO)6HCCCOOH > Co4(CO)10HCCCOOH > Co(NO3)2.
Co catalysts supported on γ-Al2O3 were prepared using Co2(CO)6HCCCOOH, Co3(CO)9CCH2COOH, and Co4(CO)10HCCCOOH as precursors. Co(NO3)2 was used as the precursor for preparing the refer-ence catalyst. The results of Fischer-Tropsch synthesis tests and characterization by transmission electron microscopy, NH3 temperature-programmed desorption, and infrared showed that the different precursors have significant effects on the dispersion of the Co, which affect their catalytic behavior. CO conversion and C5+ selectivity over these catalysts prepared from different precursors decreased in the order Co3(CO)9CCH2COOH > Co2(CO)6HCCCOOH > Co4(CO)10HCCCOOH > Co(NO3)2.
