The synthesis of Mo/H-MCM-36 catalyst and its catalytic behavior in methane non-oxidative aromatization

Layered zeolitic materials: an approach to designing versatile functional solids

“…So, the use of zeolites with improved accessibility, while preserving their intrinsic zeolitic activity as it occurs with pillared zeolites, would facilitate chemical catalytic processes where compounds with larger molecular sizes take part. 77 This can be seen when using MCM-36 with molybdenum or nickel species for methane non-oxidative aromatization 78 or ethylene oligomerization, 79 respectively. Also, vacuum gasoil cracking, 68 alkylations of biphenyl or benzene with propylene 80,81 or phenol by t-butanol 82,83 in gas phase and liquid phase, respectively, were performed using pillared MCM-36 zeolites.…”

Layered Materials with Catalytic Applications: Pillared and Delaminated Zeolites from MWW Precursors

“…It was also confirmed that the reduction of surface acidity in ITQ-2, through post-synthesis treatment with oxalic acid, strongly reduced the formation of naphthalene, resulting in enhanced benzene selectivity (∼75%) [122]. Additionally, the doping of MCM-36 with external metallic species based on molybdenum or nickel allowed the preparation of excellent catalysts methane nonoxidative aromatization [123] or ethylene oligomerization [124,125], respectively. This fact confirmed the benefits associated to the presence of stable active metallic sites onto the accessible external surface area present in the layered materials derived from MWW precursors.…”

Alkylation of benzene with propylene over MCM-36: A comparative study with MCM-22 zeolite synthesized from the same precursors

“…MCM-22 precursor was synthesized from a gel having the following composition: Si/Al = 25, Na/SiO 2 = 0.12, HMI/SiO 2 = 0.35, H 2 O/SiO 2 = 18.7 as reported previously [15]. This gel was crystallized in a Teflon-lined autoclave at 443 K for 3 days with rotating rate of 60 rpm.…”

“…Because of its particular porous network, MCM-36 has shown unusual catalytic performance in some chemical processes [9 -14]. Very recently, we found that the supported Mo/MCM-36 exhibited different catalytic behavior from Mo/MCM-22 for the non-oxidative aromatization of methane, which should be caused by the different pore structure, acidity and Mo dispersion states of the two zeolite catalysts [15].…”