燃料化学学报
燃料化學學報
연료화학학보
JOURNAL OF FUEL CHEMISTRY AND TECHNOLOGY
2014年
8期
952-957
,共6页
黄国宝%王志青%李庆峰%黄戒介%房倚天
黃國寶%王誌青%李慶峰%黃戒介%房倚天
황국보%왕지청%리경봉%황계개%방의천
合成气甲烷化%十氢萘%供氢溶剂%镍催化剂
閤成氣甲烷化%十氫萘%供氫溶劑%鎳催化劑
합성기갑완화%십경내%공경용제%얼최화제
syngas methanation reaction%decalin%hydrogen donation solvent%nickel catalyst
采用液相还原法制备非负载型镍催化剂,将非负载型镍催化剂分散在液相供氢溶剂十氢萘中,催化合成气甲烷化反应。在高压反应釜内,考察了反应温度、物质的量比等操作条件下,镍催化剂催化合成气甲烷化反应的反应活性。并对催化剂进行XRD、SEM、H2-TPR表征分析。研究结果表明,在330℃、催化剂用量为2%时,产品气中甲烷含量可达89.39%,CO和H2的转化率分别为94.56%和92.60%;催化剂用量为4%时,产品气中甲烷含量可高达94.26%,CO的转化率可达到99%以上。合成气甲烷化反应的最佳操作温度为330℃,H2/CO物质的量比最佳为2.20~2.67。
採用液相還原法製備非負載型鎳催化劑,將非負載型鎳催化劑分散在液相供氫溶劑十氫萘中,催化閤成氣甲烷化反應。在高壓反應釜內,攷察瞭反應溫度、物質的量比等操作條件下,鎳催化劑催化閤成氣甲烷化反應的反應活性。併對催化劑進行XRD、SEM、H2-TPR錶徵分析。研究結果錶明,在330℃、催化劑用量為2%時,產品氣中甲烷含量可達89.39%,CO和H2的轉化率分彆為94.56%和92.60%;催化劑用量為4%時,產品氣中甲烷含量可高達94.26%,CO的轉化率可達到99%以上。閤成氣甲烷化反應的最佳操作溫度為330℃,H2/CO物質的量比最佳為2.20~2.67。
채용액상환원법제비비부재형얼최화제,장비부재형얼최화제분산재액상공경용제십경내중,최화합성기갑완화반응。재고압반응부내,고찰료반응온도、물질적량비등조작조건하,얼최화제최화합성기갑완화반응적반응활성。병대최화제진행XRD、SEM、H2-TPR표정분석。연구결과표명,재330℃、최화제용량위2%시,산품기중갑완함량가체89.39%,CO화H2적전화솔분별위94.56%화92.60%;최화제용량위4%시,산품기중갑완함량가고체94.26%,CO적전화솔가체도99%이상。합성기갑완화반응적최가조작온도위330℃,H2/CO물질적량비최가위2.20~2.67。
Unsupported metal nickel catalysts were prepared by liquid phase reduction method. The catalytic performance of the catalysts for syngas methanation were conducted in an autoclave using decalin as the hydrogen donor solvent at different operation conditions, such as temperature, mol ratio of H2/CO in feed gas. And the catalyst characterizations were conducted by means of XRD, SEM, H2-TPR. The results showed that the content of CH4 in the product gas was 89. 39% when 2% catalyst was used at 330℃, and the corresponding conversions of CO and H2 were 94. 56% and 92. 60%, respectively. When 4% catalyst was used, the CO conversion was further improved to more than 99% while the content of CH4 in the product gas exceeded 94. 26%. The best operation temperature of syngas methanation in liquid phase was 330 ℃and the optimum range of H2/CO mol ratio in feed was 2 . 20~2 . 67 .