Catalytic pyrolysis of cellulose using MCM-41 type catalysts

Valorization of Rhizoclonium sp. algae via pyrolysis and catalytic pyrolysis

“…Al-Fe-MCM-41 (with a Si/Me molar ratio of 60 for each metal) was prepared by a classical hydrothermal synthesis as described elsewhere (Casoni et al, 2016). The SBA-15 material was also obtained by classical hydrothermal synthesis (Meynen et al, 2009) using P123 as tensioactive and tetraorthosilicate (TEOS) as silicium source in acidic medium.…”

“…The selected catalysts were mesoporous ones, SBA-15, Cu/SBA-15 and Al-Fe/MCM-41. Mesoporous solids were previously analyzed for carrying out the catalytic pyrolysis of cellulose and it was concluded that the pore dimension of mesoporous systems, as well as large specific surface areas, promoted high yield to liquid during pyrolysis (Casoni et al, 2016). On the other hand, catalysts with lower pore dimensions (as in the case of microporous solid catalysts) led to a low production of liquid, promoting solid formation (Nieva et al, 2015).…”

Conversion of woody oil into bio-oil in a downdraft reactor using a novel silicon carbide foam supported MCM41 composite catalyst

“…12,13 Researchers found that the MCM41 which is the mesoporous catalyst with relatively large pores and mild acidity can crack the large oxygenated compounds into small molecules. 14,15 In this study, a composite catalyst of the MCM41 coating on the SiC foam ceramics (SiC) is developed to applied in the microwave-assisted pyrolysis. Owing to silicon carbide's stable tetrahedral structure constructed by carbon and silicon atom, it is not easy to load metal active components, the development of serving silicon carbide as catalyst and catalyst support was limited.…”

Solid phosphoric acid catalysts based on mesoporous silica for levoglucosenone production via cellulose fast pyrolysis

“…In the present study, SPA catalysts based on aluminum‐grafted SBA‐15 mesoporous silica were prepared, characterized and tested in cellulose fast pyrolysis towards LGO production. It is known that aluminum incorporation to mesoporous silica materials of the MCM‐41 type produces an increase in acidity of the support, enhancing in this way the bio‐oil yield and LGO levels in pyrolysis products . The aim of this work is to evaluate the effect of the incorporation of variable amounts of aluminum on the structure and catalytic performance of SBA‐15 mesoporous silica as well as the influence of Al presence in SPA catalysts.…”

“…It is known that aluminum incorporation to mesoporous silica materials of the MCM-41 type produces an increase in acidity of the support, enhancing in this way the bio-oil yield and LGO levels in pyrolysis products. 21,22 The aim of this work is to evaluate the effect of the incorporation of variable amounts of aluminum on the structure and catalytic performance of SBA-15 mesoporous silica as well as the influence of Al presence in SPA catalysts. Issues related to stability under reaction conditions also are assessed.…”