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1.太原工业学院 化学与化工系,山西 太原 030008
2.延安大学 生命科学学院 陕西省黄土高原应用生态重点实验室,陕西 延安 716000
3.太原理工大学 化学与化工学院 省部共建煤基能源清洁高效利用国家重点实验室,山西 太原 030024
田敏(1993—),博士,讲师,研究方向为碳一化学与多相催化,E-mail:2470434717@qq.com。
黄伟(1962—),博士,教授,研究方向为碳一化学与多相催化,E-mail:huangwei@tyut.edu.cn。
收稿:2025-06-09,
修回:2025-07-28,
网络出版:2025-12-09,
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田敏,田星,李时荣等.Al3+和Ga3+共掺杂CuZn催化剂催化合成气制低碳醇性能研究[J].低碳化学与化工,
TIAN Min,TIAN Xing,LI Shirong,et al.Study on catalytic performances of Al3+ and Ga3+ co-doping CuZn catalysts for syngas to higher alcohols[J].Low-Carbon Chemistry and Chemical Engineering,
田敏,田星,李时荣等.Al3+和Ga3+共掺杂CuZn催化剂催化合成气制低碳醇性能研究[J].低碳化学与化工, DOI:10.12434/j.issn.2097-2547.20250261.
TIAN Min,TIAN Xing,LI Shirong,et al.Study on catalytic performances of Al3+ and Ga3+ co-doping CuZn catalysts for syngas to higher alcohols[J].Low-Carbon Chemistry and Chemical Engineering, DOI:10.12434/j.issn.2097-2547.20250261.
随着化石燃料储量的不断减少、油价的持续攀升以及日益严重的环境问题,人们对替代能源展开了深入研究。Cu基催化剂是合成气直接制乙醇和低碳醇(C
2
~C
6
醇,简写为“C
2+
醇”)的重要催化剂之一,但存在甲醇占比较高、乙醇和C
2+
醇占比较低的问题。采用完全液相法制备了一系列不同
n
(Al):
n
(Ga)的CuZn催化剂(CuZnAlGa),采用XRD、N
2
吸/脱附和H
2
-TPR等方法对催化剂的物相组成、织构性质和还原性等进行了表征,并在浆态床反应器进行了合成气加氢制乙醇和C
2+
醇反应,分析了CuZnAlGa的催化性能。结果表明,
n
(Al):
n
(Ga) = 1:2时,催化剂表面氧空位含量最高,表现出最佳的催化性能。在553 K、4.0 MPa和
n
(H
2
):
n
(CO) = 2:1条件下反应168 h,CO转化率达11.54%,乙醇和C
2+
醇在总醇中的占比分别为71.25%和86.88%(物质的量分数)。
With the continuous reduction of fossil fuel reserves
continuous rise of oil prices and increasingly serious environmental problems
people have conducted in-depth research on alternative energy sources. Cu-based catalysts are one of the most important catalysts for the direct conversion of syngas to ethanol and higher alcohols (C
2
~C
6
alcohols
abbreviated as “C
2+
alcohols”). However
there is a problem of high proportion of methanol and low proportions of ethanol and C
2+
alcohols. A series of CuZn catalysts with varying
n
(Al):
n
(Ga) (CuZnAlGa) were synthesized by complete liquid-phase method. Properties such as phase compositions
textural properties and reducibilities were characterized by XRD
N
2
adsorption/desorption
H
2
-TPR
etc. The syngas hydrogenation to ethanol and C
2+
alcohols was carried out in a slurry bed reactor
and catalytic performances of CuZnAlGa were analyzed. The results show that the catalyst with
n
(Al):
n
(Ga) = 1:2 has the highest oxygen vacancy
content and shows the best catalytic performance. Under the reaction conditions of 553 K
4.0 MPa and
n
(H
2
):
n
(CO) = 2:1
the CO conversion rate reaches 11.54 %
and the proportions of ethanol and C
2+
alcohols in the total alcohol are 71.25 % and 86.88 % (mole fraction)
respectively
after 168 hours of reaction.
盛海兵 , 孙燕 , 孙启文 . Mn助剂对KFeCuZn催化剂结构及其CO 2 加氢制C 2+ 醇催化性能的影响 [J ] . 低碳化学与化工 , 2025 , 50 ( 5 ): 32 - 39 .
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MA E J , TIAN M , LIU J , et al . Modulation of electronic metal-support interaction (EMSI) in Cu-ZnO/ZrO 2 for isobutanol synthesis [J ] . Applied Catalysis A: General , 2025 , 692 : 120114 .
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