Sustainable Upgrade of Bioderived Glycerol to Solketal through Acetalization over Metal-Free Mordenite Catalysts,ACS Sustainable Chemistry & Engineering

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Sustainable Upgrade of Bioderived Glycerol to Solketal through Acetalization over Metal-Free Mordenite Catalysts
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2022-01-12 , DOI: 10.1021/acssuschemeng.1c06330
Bhavna Saini _{1,

2} , Anup Prakash Tathod _{1,

2} , Sandeep K. Saxena _{1,

2} , Selvamani Arumugam _{1,

2} , Nagabhatla Viswanadham _{1,

2}

Affiliation

In the current work, acetalization of crude glycerol to produce valuable solketal, a renewable fuel additive, is studied over metal-free mordenite-based catalysts. The perfect combination of the appropriate acidity and suitable porosity is required to achieve optimum solketal yield from glycerol. The property–activity correlation was established through various physicochemical characterizations, and reaction parameters were optimized to maximize the solketal yield. The modified mordenite catalyst showed exceptionally high catalytic activity toward the acetalization of crude glycerol and as high as 99% yield of solketal was achieved under mild reaction conditions, i.e., a reaction temperature of 60 °C, a time of 4 h, and atmospheric pressure. The catalyst showed tolerance for water and other impurities present in crude glycerol in addition to excellent recyclability up to three cycles without any regeneration treatment. The economical, easy-to-prepare, recyclable, metal-free, moisture-tolerant nature of the catalyst makes it a promising catalyst candidate to be used at a larger scale. The catalytic process has the potential to utilize crude glycerol obtained from biodiesel plants for the synthesis of biofuel additives solketal. This highlights the industrial and environmental significance of this work.

中文翻译：

通过无金属丝光沸石催化剂的缩醛化将生物衍生甘油可持续升级为 Solketal

在目前的工作中，粗甘油的缩醛化以生产有价值的 solketal，一种可再生燃料添加剂，在无金属丝光沸石基催化剂上进行了研究。需要适当的酸度和适当的孔隙率完美结合，才能从甘油中获得最佳的溶胶产量。通过各种物理化学表征建立了性质-活性相关性，并优化了反应参数以最大限度地提高溶胶收率。改性丝光沸石催化剂对粗甘油的缩醛化反应表现出极高的催化活性，在温和的反应条件下，即反应温度60℃，反应时间4h，常压条件下，缩醛收率高达99%。 . 该催化剂显示出对粗甘油中存在的水和其他杂质的耐受性，此外还具有出色的可回收性，最多可循环三个循环，无需任何再生处理。该催化剂经济、易于制备、可回收、不含金属、耐湿的特性使其成为大规模使用的有希望的催化剂候选者。催化过程有可能利用从生物柴油工厂获得的粗甘油来合成生物燃料添加剂 solketal。这突出了这项工作的工业和环境意义。催化过程有可能利用从生物柴油工厂获得的粗甘油来合成生物燃料添加剂 solketal。这突出了这项工作的工业和环境意义。催化过程有可能利用从生物柴油工厂获得的粗甘油来合成生物燃料添加剂 solketal。这突出了这项工作的工业和环境意义。

更新日期：2022-01-24

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