分子筛镍基催化剂对1,4-丁炔二醇加氢制1,4-丁烯二醇催化性能研究

石油炼制与化工 ›› 2021, Vol. 52 ›› Issue (9): 25-30.

分子筛镍基催化剂对1,4-丁炔二醇加氢制1,4-丁烯二醇催化性能研究

张静,左童久,陆江银

新疆大学化工学院石油天然气精细化工教育部重点实验室

收稿日期:2020-12-24 修回日期:2021-04-30 出版日期:2021-09-12 发布日期:2021-08-30
通讯作者: 陆江银 E-mail:jiangyinlu6410@163.com
基金资助:
国家自然科学基金项目

CATALYTIC PERFORMANCE OF Ni-BASED CATALYST SUPPORTED ON MOLECULAR SIEVE IN HYDROGENATION OF 1,4-BUTYNEDIOL TO 1,4-BUTENEDIOL

Received:2020-12-24 Revised:2021-04-30 Online:2021-09-12 Published:2021-08-30
Contact: Lu Jiangyin E-mail:jiangyinlu6410@163.com

摘要/Abstract

摘要： 采用等体积浸渍法将Ni分别负载在USY,ZSM-5,SBA-15,Al₂O₃载体上制备Ni质量分数为17%的负载型镍基催化剂，分别用X射线衍射、N₂吸附-脱附、H₂程序升温还原以及NH3程序升温脱附对催化剂进行表征，并考察其在氢气压力为4 MPa、反应温度为120 ℃、不同反应时间下催化1,4-丁炔二醇（BYD）加氢制1,4-丁烯二醇(BED)的加氢性能。结果表明：在基于不同载体的催化剂作用下BYD转化率存在较大差异；其他条件相同时，Ni/SBA-15作用下反应2.5 h时的BYD转化率达到97.8%，BED选择性为98.7%，且2-羟基四氢呋喃（HTHF）的选择性最低，这与Ni/SBA-15具有较大的比表面积和平均孔径、良好的活性金属组分镍分散性和较弱的酸性有关。

关键词: 分子筛, 载体, 加氢催化剂, SBA-15, 1,4-丁炔二醇, 1,4-丁烯二醇

Abstract: Molecular sieve-supported nickel-based catalysts with a mass fraction of Ni of 17% were prepared on USY, ZSM-5, SBA-15 and Al₂O₃ by equal volume impregnation method, and the catalysts were characterized by XRD, BET, H₂-TPR and NH₃-TPD, respectively. The Ni-based catalyst was used to transform 1,4-butynediol (BYD) to 1,4-butenediol (BED). Its hydrogenation activity was investigated at a H₂ pressure of 4 MPa, with a temperature of 120 ℃ and at different reaction time. The results showed that the conversion of BYD was different among the catalysts with different supports. Under the same reaction conditions, the BYD conversion of Ni/SBA-15 reached 97.8% and the selectivity of BED was 98.7%, whereas the selectivity of 2-hydroxytetrahydrofuran （HTHF） was the lowest. This is due to larger specific surface area and pore size of Ni/SBA-15, good dispersion of active component Ni and weak acidity.

Key words: molecular sieve, catalyst support, hydrogenation catalyst, SBA-15, 1,4-butynediol, 1,4-butenediol

张静左童久陆江银. 分子筛镍基催化剂对1,4-丁炔二醇加氢制1,4-丁烯二醇催化性能研究[J]. 石油炼制与化工, 2021, 52(9): 25-30.

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