引用本文:
李玉敏, 耿云峰, 王日杰, 张继炎, 张鎏. 以ZrO2-Al2O3为载体的Co-Mo-K耐硫水煤气变换催化剂[J]. 应用化学,
2000, 17(3): 276-279.
Citation: LI Yu-Min, GENG Yun-Feng, WANG Ri-Jie, ZHANG Ji-Yan, ZHANG Liu. Co-Mo-K Sulfur-tolerant Water Gas Shift Catalyst Supported on ZrO2-Al2O3[J]. Chinese Journal of Applied Chemistry, 2000, 17(3): 276-279.
Citation: LI Yu-Min, GENG Yun-Feng, WANG Ri-Jie, ZHANG Ji-Yan, ZHANG Liu. Co-Mo-K Sulfur-tolerant Water Gas Shift Catalyst Supported on ZrO2-Al2O3[J]. Chinese Journal of Applied Chemistry, 2000, 17(3): 276-279.
以ZrO2-Al2O3为载体的Co-Mo-K耐硫水煤气变换催化剂
摘要:
采用沉淀法和浸渍法分别制备了ZrO2-Al2O3复合载体和Co-Mo-K耐硫变换催化剂.研究了ZrO2对Co-Mo-K耐硫变换催化剂活性及热稳定性的影响.利用XRD、BET、TG、XPS等手段对催化剂及其载体的结构、吸硫吸水性能和氧化还原性能进行了表征.结果表明以ZrO2-Al2O3代替传统的V-Al2O3作为Co-Mo-K耐硫变换催化剂的载体,可提高催化剂的活性,尤其是低温活性,并可改善催化剂的热稳定性、氧化还原性、吸硫和吸水性能.
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关键词:
- 耐硫水煤气变换反应
- / ZrO2-Al2O3载体
- / Co-Mo-K催化剂
English
Co-Mo-K Sulfur-tolerant Water Gas Shift Catalyst Supported on ZrO2-Al2O3
Abstract:
The ZrO2-Al2O3 supports were prepared by the decomposition-precipitation method. The sulfur-tolerant water-gas shift Co-Mo-K catalysts were prepared by impregnation. The effects of ZrO2-Al2O3 support on the activity and thermal stability of Co-Mo-K catalyst have been studied through activity evaluation. Using BET, XRD, TG and XPS techniques the structures of the supports and catalysts, the reduction property, sulfur and water adsorbabilities of the catalysts have been investigated. The results show that the ZrO2-Al2O3 supported Co-Mo-K catalysts exhibit a high activity, especially at low temperatures. The conversion of CO could reach up to 72.8% at 250℃ over the Z8 catalyst, being 25% higher than that over V-Al2O3 supported catalyst. The thermal stability, water and sulfur adsorbab ility and reduction property of the catalyst are all found improved on the ZrO2-Al2O3 support.
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