催化学报
催化學報
최화학보
CHINESE JOURNAL OF CATALYSIS
1999年
6期
591-596
,共6页
刘晨光%Flora T. T. Ng
劉晨光%Flora T. T. Ng
류신광%Flora T. T. Ng
加氢脱硫%硫芴%原位氢%催化剂前身物%硫化氢%一氧化碳%水
加氫脫硫%硫芴%原位氫%催化劑前身物%硫化氫%一氧化碳%水
가경탈류%류물%원위경%최화제전신물%류화경%일양화탄%수
hydrodesulfurization%dibenzothiophene%in situ hydrogen%catalyst precursor%hydrogen sulfide%carbon monoxide%water
研究了水水/甲苯乳化液中二苯并噻吩(硫芴)在分散型钼酸、磷钼酸和四硫钼酸铵催化剂存在下的加氢脱硫反应.反应在高压釜中于340℃及三种不同的气氛即H2,H2/H2O和CO/H2O(CO和H2O经水煤气转换反应(WGSR)产生原位氢)的存在下进行.用GC和GC-MS鉴定、分析了气体和液体产物的组成.结果表明:对硫芴的加氢脱硫反应,在分散型四硫钼酸铵催化剂存在下,原位产生的氢的效果仅比加入的氢气稍好,而在分散型钼酸和磷钼酸催化剂存在下,原位产生的氢远比加入的氢气有效.实验结果还表明:硫化氢能显著提高分散型钼酸和磷钼酸催化剂的加氢脱硫活性,但在分散型四硫钼酸铵催化剂存在下,硫化氢能促进加氢反应而抑制氢解反应.一氧化碳和水均选择性地抑制氢解反应.
研究瞭水水/甲苯乳化液中二苯併噻吩(硫芴)在分散型鉬痠、燐鉬痠和四硫鉬痠銨催化劑存在下的加氫脫硫反應.反應在高壓釜中于340℃及三種不同的氣氛即H2,H2/H2O和CO/H2O(CO和H2O經水煤氣轉換反應(WGSR)產生原位氫)的存在下進行.用GC和GC-MS鑒定、分析瞭氣體和液體產物的組成.結果錶明:對硫芴的加氫脫硫反應,在分散型四硫鉬痠銨催化劑存在下,原位產生的氫的效果僅比加入的氫氣稍好,而在分散型鉬痠和燐鉬痠催化劑存在下,原位產生的氫遠比加入的氫氣有效.實驗結果還錶明:硫化氫能顯著提高分散型鉬痠和燐鉬痠催化劑的加氫脫硫活性,但在分散型四硫鉬痠銨催化劑存在下,硫化氫能促進加氫反應而抑製氫解反應.一氧化碳和水均選擇性地抑製氫解反應.
연구료수수/갑분유화액중이분병새분(류물)재분산형목산、린목산화사류목산안최화제존재하적가경탈류반응.반응재고압부중우340℃급삼충불동적기분즉H2,H2/H2O화CO/H2O(CO화H2O경수매기전환반응(WGSR)산생원위경)적존재하진행.용GC화GC-MS감정、분석료기체화액체산물적조성.결과표명:대류물적가경탈류반응,재분산형사류목산안최화제존재하,원위산생적경적효과부비가입적경기초호,이재분산형목산화린목산최화제존재하,원위산생적경원비가입적경기유효.실험결과환표명:류화경능현저제고분산형목산화린목산최화제적가경탈류활성,단재분산형사류목산안최화제존재하,류화경능촉진가경반응이억제경해반응.일양화탄화수균선택성지억제경해반응.
The hydrodesulfurization (HDS) of dibenzothiophene (DBT) was investigated using dispersed catalyst precursors molybdic acid (MA), phosphomolybdic acid (PMA), and ammonium tetrathiomolybdate (ATTM). The results indicated that with ATTM catalyst, in situ hydrogen was slightly more active than the externally supplied molecular H2 for HDS of DBT, but is not so active as with MA and PMA catalysts. The experimental results also indicated that H2S has a significant promotional effect on the catalytic activity of MA or PMA catalyst. While the H2 S promoted the hydrogenation pathway, inhibited the hydrogenolysis pathway with ATTM catalyst.Both CO and H2O selectively inhibited the hydrogenolysis route.
