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碱助剂对MIL-68(Al)负载CuZnAl催化剂CO2加氢制甲醇催化性能的影响
Effects of base promoters on catalytic performances of MIL-68(Al)-loaded CuZnAl catalysts for CO2 hydrogenation to methanol
- 低碳化学与化工 2025, 50(5): 101-109.
- 作者机构：
1.太原理工大学 环境与生态学院，山西 太原 030024
2.太原理工大学 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
3.怀俄明大学 工程与物理科学学院和能源学院，怀俄明 拉勒米 82071
4.山西允博环保新技术有限公司，山西 太原 030024
5.北京建筑材料科学研究总院有限公司 固废资源化利用与节能建材国家重点实验室，北京 100041
6.太原理工大学 煤炭转化技术工程有限公司，山西 太原 030024
- 作者简介：
黄兆雄（1996—），硕士研究生，研究方向为CO2催化转化，E-mail：291606715@qq.com。
温月丽（1979—），博士，副教授，研究方向为CO2催化转化，E-mail：wenyueli@tyut.edu.cn；
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。
- 基金信息：北京建筑材料科学研究总院有限公司企业横向项目(18005059-ZS02-2022-0041);国家自然科学（面上）基金(22479105)
DOI：10.12434/j.issn.2097-2547.20240360
中图分类号： TQ426;TQ223.1收稿日期：2024-08-29，
修回日期：2024-10-16，
纸质出版日期：2025-05-25
- 稿件说明：
移动端阅览
黄兆雄,任璐,郑利斌等.碱助剂对MIL-68(Al)负载CuZnAl催化剂CO2加氢制甲醇催化性能的影响[J].低碳化学与化工,2025,50(05):101-109.
HUANG Zhaoxiong,REN Lu,ZHENG Libin,et al.Effects of base promoters on catalytic performances of MIL-68(Al)-loaded CuZnAl catalysts for CO2 hydrogenation to methanol[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(05):101-109.
黄兆雄,任璐,郑利斌等.碱助剂对MIL-68(Al)负载CuZnAl催化剂CO2加氢制甲醇催化性能的影响[J].低碳化学与化工,2025,50(05):101-109. DOI： 10.12434/j.issn.2097-2547.20240360.
HUANG Zhaoxiong,REN Lu,ZHENG Libin,et al.Effects of base promoters on catalytic performances of MIL-68(Al)-loaded CuZnAl catalysts for CO2 hydrogenation to methanol[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(05):101-109. DOI： 10.12434/j.issn.2097-2547.20240360.
摘要
以廉价的CuZnAl催化剂催化CO
2
加氢合成甲醇是节能减排、缓解能源短缺的潜在途径之一，但目前仍存在催化剂的甲醇选择性和稳定性较低等问题。以具有较高比表面积和稳定性的金属有机框架材料MIL-68(Al)作为载体，采用浸渍法制备了CuZnAl催化剂（CZ-MIL），然后分别用碱助剂NaOH、2
6-吡啶二羧酸（PDA）和四硼酸钠（Na
2
B
4
O
7
）调控CZ-MIL的酸碱性，研究了碱助剂对催化剂CO
2
加氢制甲醇催化性能和结构的影响。结果表明，引入弱碱性助剂Na
2
B
4
O
7
对催化剂酸碱性有相对较好的调节效果，在原料气中
V
(H
2
):
V
(CO
2
)为3:1、原料气总流量为100 mL/min、温度为250 ℃，以及压力为3 MPa下反应168 h，该催化剂的甲醇选择性、CO
2
转化率和甲醇时空产率分别为54.94%、2.94%和29.54 mg/(mL·h)。
Abstract
CO
2
hydrogenation to methanol catalyzed by cheap CuZnAl catalyst is one of the potential ways to save energy
reduce emission and alleviate energy shortage. However
the methanol selectivity and stability of the catalyst are still low. The CuZnAl catalyst (CZ-MIL) was prepared by impregnation method using MIL-68(Al)
a metal-organic framework material with high specific surface area and stability
as the carrier. And then the acid-base property of CZ-MIL was regulated by alkali promoters NaOH
2
6-pyridine dicarboxylic acid (PDA) and sodium tetrborate (Na
2
B
4
O
7
)
respectively. The effect of alkali promoters on catalytic performances and structures of the catalysts for CO
2
hydrogenation to methanol was studied.
The results show that the introduction of weak alkaline agent Na
2
B
4
O
7
has a relatively good adjustment effect on acid-base property of the catalyst. Under the reaction conditions of
V
(H
2
):
V
(CO
2
) of 3:1 in raw gas
total flow rate of raw gas of 100 mL/min
temperature of 250 ℃ and pressure of 3 MPa for 168 h
the methanol selectivity
CO
2
conversion rate and methanol space-time yield of the catalyst are 54.94%
2.94% and 29.54 mg/(mL·h)
respectively.
关键词
Keywords
references
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