Page 110 - 《精细化工》2022年第4期
P. 110
第 39 卷第 4 期 精 细 化 工 Vol.39, No.4
2022 年 4 月 FINE CHEMICALS Apr. 2022
催化与分离提纯技术
蒽醌法双氧水钯催化剂的制备及工业应用
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沈 冲,杨盟飞,冯 彬,张 哲,白立光 ,赵晓东
(黎明化工研究设计院有限责任公司,河南 洛阳 471000)
摘要:以铝溶胶、丙烯酸-丙烯酰胺共聚物(AA/AM)、六亚甲基四胺为原料,采用油柱成型法制备氧化铝球形
颗粒,并使用浸渍法得到 Pd/Al 2 O 3 催化剂。将 Pd/Al 2 O 3 用于 2-乙基蒽醌催化加氢反应。使用 N 2 吸附-脱附、XRD、
TEM、CO 脉冲滴定对催化剂结构进行了表征,考察了 AA/AM 对催化剂结构的影响。结果表明,AA/AM 的加
入没有改变催化剂的晶体结构,但会增加催化剂比表面积和孔径,同时使催化剂表面 Pd 粒子的尺寸减小,Pd
的分散度增大。与未改性的催化剂 APC-Q-1S 相比,添加 AA/AM 的改性催化剂 LDHA-1 在实验室反应器中的
活性由 12.5 g/L 增加至 14.5 g/L,在过氧化氢产能(以 100% H 2 O 2 计,下同)为 10 kg/d 的模型实验装置和 2000
t/a 的工业生产装置中的时空产率分别提升 77.0%和 70.0%;在过氧化氢产能为 55000 t/a 的工业生产装置中,时
空产率可达 8.55 kg H 2 O 2 /(kg cat·d),显著高于现有工业用催化剂〔≤6.14 kg H 2 O 2 /(kg cat·d)〕。
关键词:Pd/Al 2 O 3 催化剂;比表面积;孔径;2-乙基蒽醌加氢;过氧化氢;工业应用;催化技术
中图分类号:TQ123.6;TQ426 文献标识码:A 文章编号:1003-5214 (2022) 04-0746-07
Preparation and application of palladium-based catalyst for
producing hydrogen peroxide through anthraquinone route
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SHEN Chong, YANG Mengfei, FENG Bin, ZHANG Zhe, BAI Liguang , ZHAO Xiaodong
(Liming Research and Design Institute of Chemical Industry Co., Ltd., Luoyang 471000, Henan, China)
Abstract: Alumina spherical granules were synthesized via oil-drop method using alumina sol, acrylic
acid-acrylamide copolymer (AA/AM) and hexamethylenetetramine as raw materials. Then Pd/Al 2O 3
catalyst was prepared by wet impregnation for the catalytic hydrogenation of 2-ethylanthraquinone. The
catalyst was characterized by N 2 adsorption-desorption, XRD, TEM and CO pulse titration. The effect of
AA/AM on the structure of the catalyst was studied. The result showed that the addition of AA/AM did not
change the crystal structure of the catalyst, but increased specific surface area and pore size. Meanwhile, the
addition of AA/AM decreased the size of Pd particles on the catalyst surface and increased the dispersion of
Pd. Compared with those of unmodified APC-Q-1S, the catalytic activity of LDHA-1 catalyst modified by
AA/AM in a laboratory reactor increased from 12.5 to 14.5 g/L, and the space-time yields of LDHA-1 in a
model plant with hydrogen peroxide capacity (on the basis of 100% H 2O 2, the same below) of 10 kg/d and
in an industrial plant with hydrogen peroxide capacity of 2000 t/a increased by 77.0% and 70.0%,
respectively. The space-time yield in the industrial plant with hydrogen peroxide capacity of 55000 t/a was
up to 8.55 kg H 2 O 2 / (kg cat·d), significantly higher than those of commercial catalysts [≤6.14 kg H 2 O 2 /(kg cat·d)].
Key words: Pd/Al 2O 3 catalyst; specific surface area; pore size; hydrogenation of 2-ethylanthraquinone;
hydrogen peroxide; industrial application; catalysis technology
过氧化氢,俗称“双氧水”,广泛用于化学品合 该过程多使用 Pd/Al 2 O 3 催化剂 [1-2] 。随着以过氧化氢
成、造纸、污水处理、纺织等领域。工业上使用蒽 为原料合成己内酰胺和环氧丙烷绿色工艺的成熟,
[3]
醌法生产过氧化氢,蒽醌加氢是其中的关键工序, 过氧化氢生产装置产能急需大幅提升 ,而现有催
收稿日期:2021-09-15; 定用日期:2021-11-25; DOI: 10.13550/j.jxhg.20210937
基金项目:河南省重大科技专项(创新示范专项,79819);洛阳市科技重大专项(1901027A)
作者简介:沈 冲(1983—),男,高级工程师,E-mail:412239108@qq.com。联系人:白立光(1983—),男,高级工程师,E-mail:
bailiguang@sciences.chemchina.com。