CAJ | 학술논문

制备了碳化铁和钾掺杂碳化钼催化剂并对其CO加氢合成低碳混合醇性能进行了考察.结果表明当只有β-碳化钼存在时,产物主要是烃类以及微量的醇.经过钾改性后,β-碳化钼催化剂上产物低碳醇含鼍增加;而同时被碳化铁和钾改性后,低碳醇的含量进一步增加,并且高级醇(C_(2+)OH)收率町达到0.14 g/(mL·h).β-碳化钼催化剂上醇烃产物均符合线性Anderson-Schuhz-Mory(A-S-F)分布曲线,而钾改性β-碳化钼以及钾和碳化铁改性的催化剂上醇产物为独特的甲醇负偏离A-SF分布.这表明钾和碳化铁的加入有效促进了C_1OH到C_2OH的链增长步骤.从而有利于C_(2+)OH高级醇的生成.
제비료탄화철화갑참잡탄화목최화제병대기CO가경합성저탄혼합순성능진행료고찰.결과표명당지유β-탄화목존재시,산물주요시경류이급미량적순.경과갑개성후,β-탄화목최화제상산물저탄순함타증가;이동시피탄화철화갑개성후,저탄순적함량진일보증가,병차고급순(C_(2+)OH)수솔정체도0.14 g/(mL·h).β-탄화목최화제상순경산물균부합선성Anderson-Schuhz-Mory(A-S-F)분포곡선,이갑개성β-탄화목이급갑화탄화철개성적최화제상순산물위독특적갑순부편리A-SF분포.저표명갑화탄화철적가입유효촉진료C_1OH도C_2OH적련증장보취.종이유리우C_(2+)OH고급순적생성.
The catalystic performances of iron carbide and potassium promoted molybdenum carbide catalysts are investigated for mixed alcohols synthesis from syngas.The results show that hydrocarbons and a trace of alcohols are formed over molybdenum carbide catalyst.The low carbon in alcohols products increase when the catalyst in promoted by potassium.When the β-molybdenum carbide catalyst is promoted by both iron carbide and potassium,the yield of C_(2+) OH can reach 0.14 g/(mL·h).The distribution of hydrocarbons obeys the traditional linear Anderson-Schultz-Flory equation,while the distribution of alcohols gives a unique linear Anderson-Schuhz-Flory with remarkable deviation of methanol.Thus,potassium and iron carbide promoter exerts a prominent function on the whole chain propagation to produce alcohols especially for the stage of methanol to ethanol.