Hierarchical porous nano-MFI zeolite-pillared montmorillonite clay synthesized by recrystallization for hydrocracking of residual oil

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 46104-46108 ◽  
Author(s):  
Zhiming Ren ◽  
Baoshan Li ◽  
Liwen Yue ◽  
Naijin Wu ◽  
Kaixuan Lv ◽  
...  
Keyword(s):  
Hierarchical Structure ◽  
Montmorillonite Clay ◽  
Residual Oil ◽  
Mfi Zeolite ◽  
Pillared Montmorillonite ◽  
Hierarchical Porous

An MFI zeolite nanosheet-pillared montmorillonite clay (MPC) with a uniform hierarchical structure was synthesized by a recrystallization method.

Al-pillared montmorillonite clay minerals: Low-pressure CO adsorption at room temperature

2007 ◽  
Vol 313 (2) ◽  
pp. 747-750 ◽  
Author(s):  
Atsushi Itadani ◽  
Masashi Tanaka ◽  
Takahiro Abe ◽  
Hideki Taguchi ◽  
Mahiko Nagao
Keyword(s):  
Clay Minerals ◽  
Room Temperature ◽  
Co Adsorption ◽  
Low Pressure ◽  
Montmorillonite Clay ◽  
Pillared Montmorillonite

Energy-Filtered Imaging of Zirconia Pillars in Montmorillonite

1998 ◽  
Vol 4 (S2) ◽  
pp. 744-745
Author(s):  
P. A. Crazier ◽  
M. Pan ◽  
C. Bateman ◽  
J. J. Alcaraz ◽  
J. S. Holmgren
Keyword(s):  
Electron Microscopy ◽  
Elemental Composition ◽  
Active Sites ◽  
Analytical Electron Microscopy ◽  
Montmorillonite Clay ◽  
Considerable Effort ◽  
Pillared Montmorillonite ◽  
Trade Name ◽  
Analytical Electron ◽  
Fine Tune

The ability to vary the plane spacing in different clays is becoming increasingly important in catalysis and other technological applications [Baker and Murrell, 1990]. Considerable effort is now being devoted to understanding the mechanisms involved in pillaring such materials with a view to being able to fine-tune parameters such as the plane spacing and active sites for the application of interest. We have been able to use analytical electron microscopy to directly image the pillars in zirconia pillared montmorillonite. By using a combination of TEM techniques, we are able to correlate morphological information with elemental composition and conclusively identify the location of the zirconia pillars.A sample of natural montmorillonite clay, trade name HPM-20, was obtained from American Colloid and used as received. Zirconia pillared clays were prepared following published procedures [Bartley, 1988]. The Z1O2 pillars were prepared by using hydroxyzirconium cations produced by the solvation of zironyl chloride.

Aluminum pillared montmorillonite clay-based self-healing coatings for corrosion protection of magnesium alloy AZ91D

2018 ◽  
Vol 352 ◽  
pp. 445-461 ◽  
Author(s):  
Swapnil H. Adsul ◽  
T. Siva ◽  
S. Sathiyanarayanan ◽  
Shirish H. Sonawane ◽  
R. Subasri
Keyword(s):  
Magnesium Alloy ◽  
Corrosion Protection ◽  
Montmorillonite Clay ◽  
Self Healing ◽  
Pillared Montmorillonite ◽  
Alloy Az91d

scholarly journals SYNTHESIS AND CHARACTERIZATION OF PHOTOCATALYS Fe2O3 PILLARED MONTMORILLONITE DOPED TiO2 AND ITS APPLICATION FOR RHODAMINE B PHODODEGRADATION USING VISIBLE LIGHT IRRADIATION

Jurnal Kimia ◽  
2020 ◽  
pp. 82
Author(s):  
D. A. D. N. Dewi ◽  
I N. Simpen ◽  
I W. Suarsa
Keyword(s):  
Visible Light ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Rhodamine B ◽  
High Specific Surface Area ◽  
Montmorillonite Clay ◽  
Pillared Montmorillonite ◽  
Bet Method ◽  
Acid And Base

A montmorillonite clay modified with semiconductor metal can act as a photocatalyst material. Montmorillonite clays were chosen because of their natural characteristics which are easily to be modified and have high specific surface area. This research aims to modify montmorillonite clay into photocatalyst material. The montmorillonite clay was intercalated using Fe2O3 to produce Fe2O3-pillared montmorillonite clay, then doped with TiO2 to form a photocatalyst material Fe2O3-PILC / TiO2. Modifications were intended to increase the specific surface area and number of active photocatalyst sites and thus increase the ability of photodegradation. The characterization carried out included characterizing the pillar formation using X-ray Diffraction (XRD), specific surface area by the BET method (Bruneau, Emmet, and Teller), a the number of surface acid-base sites by the titration method. Photocatalyst with the best character was Fe2O3-PILC / TiO2 1: 3 with specific surface area, number of acid and base sites respectively 45,947 m2/g, 20,1736 x 1023 sites/gram and 19,0044 x 1023 sites/gram. The result of photodegradation at optimum condition with visible light at pH 3 using 400 mg photocatalyst was 99.84%.   Keywords: photocatalyst, Fe2O3, montmorillonite clay, TiO2, rhodamine B

Facile preparation of MOF-derived MHCo3O4 & Co/C with hierarchical porous structure for entrapping enzyme: Having both high stability and catalytic activity

2021 ◽  
Author(s):  
Xia Gao ◽  
Huibin Pan ◽  
Chengfang Qiao ◽  
Yongliang Liu ◽  
Chun-Sheng Zhou ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Porous Structure ◽  
Porous Materials ◽  
Hierarchical Structure ◽  
High Stability ◽  
The Self ◽  
Hierarchical Porous Structure ◽  
Sacrificial Template ◽  
Hierarchical Porous ◽  
Facile Preparation

MOF-derived porous materials Co3O4 and Co/C with hierarchical structure (MHCo3O4 & Co/C) were prepared by the self-sacrificial template strategy, and the surface of such materials were functionally modified with "polydopamine...

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