作为一种有效的生物柴油废物生产价值化催化剂的MOF-808:糖乙化
Fátima Mirante1, Pedro Leo1,2, Catarina N Dias1
1LAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal.
Materials (Basel, Switzerland)
|November 14, 2023
概括
将生物柴油副产品甘油价值化为燃料添加剂solketal是使用MOF-808 (((Hf) 异质催化剂实现的. 这种可持续材料证明了高效率和可重复使用的糖乙化.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 甘油是生物柴油生产的主要副产品,需要有效的价值化策略.
- 索尔基塔尔 (Solketal) 是由甘油乙化衍生而来的,作为一种有价值的燃料添加剂,增强生物柴油和化石燃料的质量.
- 开发可持续的催化工艺用于糖的价值化符合循环经济原则.
研究的目的:
- 调查MOF-808家族金属有机框架 (MOFs) 作为糖价值化异质催化剂的有效性.
- 评估MOF-808 (((Hf) 专门用于从甘油和乙生产索尔基塔尔.
- 在中度反应条件下评估MOF-808的催化性能,可重复使用性和稳定性.
主要方法:
- 合成MOF-808 (((Hf) 的材料.
- 在中等条件下使用MOF-808 ((Hf) 作为催化剂的甘与乙的乙化反应 (催化剂负荷为4 wt%,甘/乙比例为 1:6,333 K).
- 在十个连续反应周期中评估催化剂活性,选择性和可重复使用性.
主要成果:
- MOF-808 ((Hf) 有效地催化了从高转化率 (>90%) 和选择性 (>98%) 的糖醇生成索尔基塔尔.
- 催化剂的高效率归因于其丰富的酸中心和最佳的结构特征 (毛孔大小,腔体尺寸).
- MOF-808 ((Hf) 在至少十个循环中显示出出色的可重复使用性,而不会显著地损失活性,结构完整性或需要中间洗/激活.
结论:
- MOF-808 ((Hf) 是一种高效和可持续的异质催化剂,用于将甘油价值化为solketal.
- 催化剂在温和条件下的稳定性和可重复使用性使其成为工业应用的有吸引力的选择.
- 这项研究强调了MOF-808的潜力,通过高效的副产品价值化来促进循环经济.
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