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第 37 卷第 3 期                             精   细   化   工                                  Vol.37, No.3
             202 0 年 3 月                             FINE CHEMICALS                                 Mar.    2020


              催化与分离提纯技术
                             逆 уCeO /Cu Co O 催化剂的制备
                                                                 δ
                                            2
                                                    χ
                                                          1–χ
                                        及其 CO 催化氧化性能


                                                                                          1
                                                                                                       1
                 谷荣彩      1,2,3,4 ,叶丽萍     2,3,4* ,杨丙星     2,3,4 ,黄金花      2,3,4 ,张建勇 ,邓   维
                 (1.  上海应用技术大学  化学与环境工程学院,上海    201418;2.  聚烯烃催化技术与高性能材料国家重点
                 实验室,上海    200062;3.  上海化工研究院有限公司,上海    200062;4.  上海聚烯烃催化技术重点实验
                 室,上海    200062)


                 摘要:以 Cu(NO 3 ) 2 ·3H 2 O、Co(NO 3 ) 2 ·6H 2 O、Ce(NO 3 ) 3 ·6H 2 O 和(NH 4 ) 2 CO 3 为原料,采用共沉淀法-浸渍法结合的
                 制备方式,制得逆负载型 уCeO 2 /Cu χ Co 1–χ O δ 催化剂(у=0、5%、15%、25%;χ=0 ~ 1.0;δ=1.0~1.4)。通过 XRD、
                 BET、H 2 -TPR、XPS 考察了 CuO 和 Co 3 O 4 质量比〔m(CuO)∶m(Co 3 O 4 )〕、表面 CeO 2 负载量(у)(以 Cu χ Co 1–χ O δ
                 质量为基准,下同)对逆负载 уCeO 2 /Cu χ Co 1–χ O δ 催化剂催化氧化 CO 性能的影响。结果表明,15% CeO 2 /Cu 0.2 Co 0.8 O δ
                 〔m(CuO)∶m(Co 3 O 4 )=0.2∶0.8〕催化剂催化性能最佳。常压下,当反应温度为 75  ℃时,CO 转化率可达 100%。
                 由于 15% CeO 2 /Cu 0.2 Co 0.8 O δ 比表面积较大,两相界面较多,进而使得 CeO 2 与 Cu—O—Co 固溶体相互作用较强,
                                            3+
                                       +
                 表面存在较多的氧空穴、Cu 和 Co ,催化剂还原温度较低,催化活性较好。
                                                                    3+
                                                               +
                 关键词:CO բ߄သ߄ĠCeO 2 ĠCu χ Co 1–χ O δ Ġཌྷ޺ቔႨĠCu ބ Co Ġբ߄࠯ඌ
                 中图分类号:TQ032.41      文献标识码:A      文章编号:1003-5214 (2020) 03-0540-07

                            Preparation of inverse уCeO 2/Cu χCo 1–χO δ catalysts and
                                    their catalytic activities for CO oxidation


                           GU Rongcai 1,2,3,4 , YE Liping 2,3,4* , YANG Bingxing 2,3,4 , HUANG Jinhua 2,3,4 ,
                                                                          1
                                                              1
                                              ZHANG Jianyong , DENG Wei
                 (1. School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
                 2.  State Key Laboratory of Polyolefins and Catalysts, Shanghai  200062,  China;  3.  Shanghai Research Institute  of
                 Chemical Industry Co., Ltd., Shanghai  200062,  China;  4.  Shanghai Key Laboratory of Catalyst  Technology for
                 Polyolefins, Shanghai 200062, China)

                 Abstract: A series of inverse уCeO 2/Cu χCo 1–χO δ catalysts (у=0, 5%, 15%, 25%; χ=0~1.0; δ=1.0~1.4) were
                 prepared  by  combinations  of  co-precipitation  method  and  impregnation  method  using  Cu(NO 3) 2·3H 2O,
                 Co(NO 3) 2·6H 2O, Ce(NO 3) 3·6H 2O and (NH 4) 2CO 3 as raw materials. The influences of the mass ratio of CuO
                 to  Co 3O 4  and  CeO 2  loading  (y)  (based  on  the  mass  of  Cu χCo 1–χO δ)  on  the  catalytic  performances  of
                 уCeO 2/Cu χCo 1–χO δ catalysts for CO oxidation were investigated by XRD, BET, H 2-TPR and XPS techniques.
                 The results revealed that 15% CeO 2/Cu 0.2Co 0.8O δ〔m(CuO)∶m(Co 3O 4)=0.2∶0.8〕  catalyst exhibited the
                 best catalytic performance due to its large specific surface area and two-phase interface. Larger interfaces
                                                                                                       +
                 led to the strong interaction between CeO 2 and Cu 0.2Co 0.8O δ. As a result, there were more oxygen holes, Cu
                       3+
                 and Co  on the surface, which decreased the reduction temperature of 15%CeO 2/Cu 0.2Co 0.8O δ. So, 15%
                 CeO 2/Cu 0.2Co 0.8O δ  catalyst  exhibited  a  higher  catalytic  activity  in  the  CO  oxidation  with  100%  CO
                 conversion at temperature of 75  ℃  and a constant pressure.
                                                                          +
                                                                                 3+
                 Key words: CO catalytic oxidation; CeO 2; Cu χCo 1–χO δ; interaction; Cu and Co ; catalysis technology


                 收稿日期:2019-06-11;  定用日期:2019-09-07; DOI: 10.13550/j.jxhg.20190526
                 基金项目:2018 上海市人才发展资金资助项目(2018019)
                 作者简介:谷荣彩(1993—),女,硕士生。联系人:叶丽萍(1981—),女,高级工程师,E-mail:ylp_by@126.com。
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