Fabrication of attrition-resistant nanostructured catalyst by spray dryer for methanol to light olefins reaction in a fluid bed reactor and coke formation

Lewis acid Ni/Al-MCM-41 catalysts for H2-free deoxygenation of Reutealis trisperma oil to biofuels

“…60,61 The vibration bands at 1380-1680 cm À1 were assigned to the stretching vibration of C]C in poly condensed aromatic rings and CH 3 bending of paraffinic residue. 57 The results obtained from FTIR analysis further conrmed the formation of aromatic and aliphatic coke deposited on the catalysts during the deoxygenation reaction.…”

“…The specic region for characterization of coke is between 1300-1700 cm À1 and 2800-3100 cm À1 . [57][58][59] The absorption peak at 3449 cm À1 that was attributed to the associated OH group showed signicant reduction in intensity aer reaction. The new absorption bands at 2866 cm À1 and 2910 cm À1 were observed on the spent catalyst which were ascribed to the symmetric and the asymmetric stretching vibration of C-H in CH 3 and CH 2 aliphatic carbon.…”

Ultrasound-assisted rapid hydrothermal design of efficient nanostructured MFI-Type aluminosilicate catalyst for methanol to propylene reaction

“…The C 2 H 6 /C 3 H 8 ratio of MTO products can vary considerably depending on the catalyst framework type and as well as reaction conditions [5] , [6] , [7] . In this case, methanol to propylene reaction (MTP) with high amount of propylene production seems to be a suitable strategy by increasing world demand for petrochemical plants [8] , [9] , [10] . MFI-like materials such as aluminosilicate (ZSM-5) are reported to offer certain advantages to obtain the maximum yield of propylene during the MTP process [11] , [12] , [13] .…”