Potassium-incorporated mesoporous carbons: strong solid bases with enhanced catalytic activity and stability†,Catalysis Science & Technology

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Potassium-incorporated mesoporous carbons: strong solid bases with enhanced catalytic activity and stability†
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1039/c8cy00100f
Tian-Tian Li _{1,

2,

3,

4,

5} , Xia-Jun Gao _{1,

2,

3,

4,

5} , Shi-Chao Qi _{1,

2,

3,

4,

5} , Li Huang _{1,

2,

3,

4,

5} , Song-Song Peng _{1,

2,

3,

4,

5} , Wei Liu _{1,

2,

3,

4,

5} , Xiao-Qin Liu _{1,

2,

3,

4,

5} , Lin-Bing Sun _{1,

2,

3,

4,

5}

Affiliation

With the growing demand for green chemistry, mesoporous solid strong bases have attracted increasing attention in view of their tremendous potential as eco-friendly catalysts in diverse reactions. In the present study, K-incorporated mesoporous carbon is successfully prepared through high-temperature chemical activation combined with the hard-templating method. The combined method is proved to be very effective at promoting the formation of stable K species that strongly interact with the carbon support. The obtained solid bases thus have both high activity and enhanced water-resistant stability, which is reflected in their catalysis of the transesterification of ethylene carbonate with methanol to dimethyl carbonate. A much higher turnover frequency (TOF) value (430.4 h⁻¹) and better reusability are thus observed, compared with a series of typical and popular solid bases, such as MgO (TOF, 1.0 h⁻¹) and CaO/SBA-15 (TOF, 6.4 h⁻¹).

中文翻译：

钾结合的中孔碳：具有增强的催化活性和稳定性的坚固固体碱†

随着对绿色化学的需求不断增长，介孔固体强碱由于其在各种反应中作为生态友好型催化剂的巨大潜力而受到越来越多的关注。在本研究中，通过高温化学活化结合硬模板法成功地制备了含钾的介孔碳。事实证明，该组合方法在促进与碳载体强烈相互作用的稳定K物种形成方面非常有效。因此，所获得的固体碱具有高活性和增强的耐水性稳定性，这反映在它们催化碳酸亚乙酯与甲醇进行酯交换反应生成碳酸二甲酯。更高的周转频率（TOF）值（430.4 h ^-1因此，与一系列典型和流行的固体碱（例如MgO（TOF，1.0 h ^-1）和CaO / SBA-15（TOF，6.4 h ^-1））相比，可以观察到更好的可重用性。

更新日期：2018-03-19

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