Coupling Hydrogenation of Guaiacol with In Situ Hydrogen Production by Glycerol Aqueous Reforming over Ni/Al2O3 and Ni-X/Al2O3 (X = Cu, Mo, P) Catalysts
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Nanomaterials
, E-ISSN: 2079-4991
|
| Вых. Данные |
Год: 2020,
Том: 10,
Номер: 7,
Номер статьи
: 1420,
Страниц
: 21
DOI:
10.3390/nano10071420
|
| Ключевые слова |
glycerol; guaiacol; Hydrogenation; In-situ generated hydrogen; Ni-based catalysts |
| Авторы |
Chen Ziyin
1
,
Kukushkin Roman G.
2
,
Yeletsky Petr M.
2
,
Saraev Andrey A.
2
,
Bulavchenko Olga A.
2
,
Millan Marcos
1
|
| Организации |
| 1 |
Department of Chemical Engineering, Imperial College London, London SW7 2AZ, UK
|
| 2 |
Federal Research Center, Boreskov Institute of Catalysis SB RAS, Lavrentieva Ave. 5, 630090 Novosibirsk, Russian
|
|
Информация о финансировании (2)
|
1
|
Российский фонд фундаментальных исследований
|
17-53-10005
|
|
2
|
Royal Society of Chemistry
|
IEC\R2\170089
|
Biomass-derived liquids, such as bio-oil obtained by fast pyrolysis, can be a valuable source of fuels and chemicals. However, these liquids have high oxygen and water content, needing further upgrading typically involving hydrotreating using H2 at high pressure and temperature. The harsh reaction conditions and use of expensive H2 have hindered the progress of this technology and led to the search for alternative processes. In this work, hydrogenation in aqueous phase is investigated using in-situ produced hydrogen from reforming of glycerol, a low-value by-product from biodiesel production, over Ni-based catalysts. Guaiacol was selected as a bio-oil model compound and high conversion (95%) to phenol and aromatic ring hydrogenation products was obtained over Ni/γ-Al2O3 at 250 °C and 2-h reaction time. Seventy percent selectivity to cyclohexanol and cyclohexanone was achieved at this condition. Hydrogenation capacity of P and Mo modified Ni/γ-Al2O3 was inhibited because more hydrogen undergoes methanation, while Cu showed a good performance in suppressing methane formation. These results demonstrate the feasibility of coupling aqueous phase reforming of glycerol with bio-oil hydrogenation, enabling the reaction to be carried out at lower temperatures and pressures and without the need for molecular H2.