Nanosized catalyst (iron oxide) into the pores of a mesoporous material
(titania) has been deposited using ultrasound radiation and the resulting catalyst is used for the oxidation of cyclohexane under mild conditions .
The parent mesoporous material
completely lost its structure after 48 hrs in boiling water.
Microporous and Mesoporous Material
, 100(1-3): 12-19.
The [N.sub.2] adsorption isotherm exhibits a reversible type IV isotherm with a clear hysteresis at P > 0.4 atm, which is a characteristic of mesoporous material
. Its BET surface area, Langmuir surface area, and pore volume were calculated to be 865.4-1205.1 [m.sup.2] [g.sup.-1] and 0.74 [cm.sup.3] [g.sup.-1], respectively.
Herein, the Al-MCM-41 mesoporous material
was prepared by a hydrothermal method using the Vietnamese bentonite as Si and Al precursors.
The mesoporous material
SBA-15 has a lot of properties, such as large surface area, narrow pore size distribution, large pore diameter and pore volume, and suitable mechanical strength sustained by a thick wall , to be considered as a good candidate for supporting metallocenes.
In 1992, the discovery of the ordered mesoporous material
MCM-41 opened up a new research field in mesoporous materials
that were highly desirable for application in processes that involve large molecules .
As a continuation of our interest in catalyst of supported mesoporous material
in the organic synthesis [21, 22], herein, we reported isatins as the electrophiles to react with indoles using PWA/MCM-41 as catalyst at room temperature for the synthesis of 3,3-di(indolyl)indolin-2-ones.
pH ([degrees]C) Accurel MP 1000 100 40 -- macroporous resin NKA 84.3 37 -- andrographolide 99 50 -- mesoporous material
SBA-15 87 60 6.0-8.5 K-carrageenan 42.6 45 6.0-9.0 Poly-hydroxybutyrate 95,8 50 8.5 particles (PHB) mesoporous magnetic 96 -- 7.5 in situ in polyurethane 700 40 7.0 Support Ther stab.
Pore size distribution of the activated carbons prepared with three activating agent ratios at two different temperatures, 500 [degrees]C (AC1-AC3) and 600 [degrees]C (AC5-AC6) using BJH method for mesoporous material
The improved specific surface area indicates that a functional mesoporous material
The final mesoporous material
was calcined at 550[degrees]C for 6 h with the average heating rate of 1[degrees]C/min.