Synthesis and characterization of solid base mesoporous and microporous catalysts: Influence of the support, structure and type of base metal

Narendra Kumar*, Ewelina Leino, Päivi Mäki-Arvela, Atte Aho, Mats Käldström, Marjukka Tuominen, Pekka Laukkanen, Kari Eränen, Jyri-Pekka Mikkola, Tapio Salmi, Dmitry Yu Murzin

*Korresponderande författare för detta arbete

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

44 Citeringar (Scopus)

Sammanfattning

Synthesis of solid base Ce-H-MCM-41, Ce-Si-MCM-41, Cs-MCM-41, K-MCM-41 mesoporous materials and Na-ZSM-12, Cs-ZSM-12 microporous zeolites were carried out by means of evaporation impregnation and ion-exchange methods. The solid base catalysts were characterized using X-ray powder diffraction, scanning electron microscope, nitrogen adsorption, FTIR of pyridine and temperature programmed desorption of CO 2. The H-ZSM-12, Cs-ZSM-12 zeolite, H-MCM-41, Ce-H-MCM-41 and Ce-Si-MCM-41 mesoporous catalysts were studied for the synthesis of diethyl carbonate starting from ethanol and carbon dioxide, using butylene oxide as the dehydrating agent. Catalyst testing for the synthesis of diethyl carbonate was carried out at 170°C and 4.5 MPa of initial CO 2 pressure. 16 wt.% Ce-H-MCM-41 mesoporous material exhibited higher amount of weak, medium and strong basic sites than that of 32 wt.% Ce-Si-MCM-41. The presence of weak and strong basic sites was observed in the microporous 2 wt.% Cs-ZSM-12 catalyst. Diethyl carbonate formation was observed over Ce-H-MCM-41 and Ce-Si-MCM-41 mesoporous materials. Amount of basic sites and its strength influenced the synthesis of diethyl carbonate over the mesoporous materials.

OriginalspråkEngelska
Sidor (från-till)71-77
Antal sidor7
TidskriftMicroporous and Mesoporous Materials
Volym152
DOI
StatusPublicerad - 1 apr 2012
MoE-publikationstypA1 Tidskriftsartikel-refererad

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