Efficient Ru-based scrap waste automotive converter catalysts for the continuous-flow selective hydrogenation of cinnamaldehyde

The selective, efficient and sustainable continuous flow hydrogenation of a α,β-unsaturated aldehyde, i.e. cinnamaldehyde, to the corresponding unsaturated alcohol, i.e. cinnamyl alcohol, using a novel catalyst based on Ru-containing scrap waste automotive converters is reported. The catalyst was prepared by recycling and upgrading waste ceramic-cores of scrap automotive catalytic converters as supporting materials. Ruthenium was incorporated into the ceramic structures using a simple, fast and solventless mechanochemically assisted procedure followed by a chemical reduction step. Different catalysts were prepared with varying Ru contents. The materials were characterized by XRD, N2 physisorption, XPS, TEM, HRTEM and SEM/mapping analyses. Compared to Ru supported over most studied silica and alumina supports, the new system displayed an outstanding catalytic performance under continuous-flow conditions in terms of conversion and selectivity and a remarkable stability with time-on-stream, demonstrating a synergistic action between Ru and the waste catalytic converter support. A Ru loading of 10 wt% provided the optimum results, including a cinnamaldehyde conversion of up to 95% with a selectivity to cinnamyl alcohol of 80%. © The Royal Society of Chemistry.

Авторы
Cova C.M.1 , Zuliani A.1 , Muñoz-Batista M.J.1 , Luque R. 1, 2
Редакторы
-
Журнал
Издательство
Royal Society of Chemistry
Номер выпуска
17
Язык
Английский
Страницы
4712-4722
Статус
Опубликовано
Подразделение
-
Номер
-
Том
21
Год
2019
Организации
  • 1 Departamento de Quimica Organica, Universidad de Cordoba Edificio Marie-Curie (C-3), Ctra Nnal IV-A Km 396, Cordoba, Spain
  • 2 Peoples Friendship University of Russia (RUDN University), 6 Miklukho Maklaya str., Moscow, 117198, Russian Federation
Ключевые слова
-
Дата создания
24.12.2019
Дата изменения
24.12.2019
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/55349/