Tailoring the Porous Hierarchy and the Tetrahedral Aluminum Content by Using Carboxylate Ligands: Hierarchically Structured Macro-Mesoporous Aluminosilicates from a Single Molecular Source

Langmuir ◽  
2010 ◽  
Vol 26 (22) ◽  
pp. 17603-17616 ◽  
Author(s):  
Arnaud Lemaire ◽  
Bao-Lian Su
Keyword(s):  
Aluminum Content ◽  
Mesoporous Aluminosilicates ◽  
Carboxylate Ligands ◽  
Molecular Source

Cover Picture: Novel Three Dimensional CubicFm3m Mesoporous Aluminosilicates with Tailored Cage Type Pore Structure and High Aluminum Content (Adv. Funct. Mater. 4/2008)

2008 ◽  
Vol 18 (4) ◽  
pp. NA-NA
Author(s):  
Pavuluri Srinivasu ◽  
Sher Alam ◽  
Veerappan V. Balasubramanian ◽  
Sivan Velmathi ◽  
Dhanashri P. Sawant ◽  
...  
Keyword(s):  
Pore Structure ◽  
Aluminum Content ◽  
Three Dimensional ◽  
Mesoporous Aluminosilicates ◽  
High Aluminum Content ◽  
High Aluminum

Novel Three Dimensional CubicFm3m Mesoporous Aluminosilicates with Tailored Cage Type Pore Structure and High Aluminum Content

2008 ◽  
Vol 18 (4) ◽  
pp. 640-651 ◽  
Author(s):  
Pavuluri Srinivasu ◽  
Sher Alam ◽  
Veerappan V. Balasubramanian ◽  
Sivan Velmathi ◽  
Dhanashri P. Sawant ◽  
...  
Keyword(s):  
Pore Structure ◽  
Aluminum Content ◽  
Three Dimensional ◽  
Mesoporous Aluminosilicates ◽  
High Aluminum Content ◽  
High Aluminum

Synthesis of Higher Aluminum Content Hexagonal and Cubic Mesoporous Aluminosilicates toward Catalysts

2005 ◽  
Vol 35 (1-2) ◽  
pp. 25-34 ◽  
Author(s):  
Chunlei Wang ◽  
Guangshan Zhu ◽  
Xiaohui Cai ◽  
Tiecun Shang ◽  
Lan Zhao ◽  
...  
Keyword(s):  
Aluminum Content ◽  
Mesoporous Aluminosilicates ◽  
Cubic Mesoporous

NICKELVAC X-751

Alloy Digest ◽  
1990 ◽  
Vol 39 (11) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Aluminum Content ◽  
Heat Treating ◽  
Vacuum Arc ◽  
Vacuum Induction Melting ◽  
Induction Melting ◽  
Service Temperature ◽  
Maximum Service Temperature

Abstract NICKEL VAC X-751 is a modification of NICKEL VAC X-750 carrying higher aluminum content (0.90-1.50 vs 0.4-1.0%). This raises the maximum service temperature 100 F(55 C) to 1600 F(871 C). NICKEL VAC X-751 has a simplified and shortened heat treating cycle relative to NICKEL VAC X-750. It is produced by vacuum induction melting followed by vacuum arc or electroslag remelting. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-387. Producer or source: Teledyne Allvac.

scholarly journals The Influence of Aluminum Content on Oxidation Resistance of New-Generation ODS Alloy at 1200 °C

Metals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1478 ◽  
Author(s):  
Luděk Stratil ◽  
Vít Horník ◽  
Petr Dymáček ◽  
Pavla Roupcová ◽  
Jiří Svoboda
Keyword(s):  
Oxidation Resistance ◽  
Cross Sections ◽  
Aluminum Content ◽  
Energy Dispersive Spectrometer ◽  
Oxide Dispersion Strengthened ◽  
Xrd Analysis ◽  
Al Content ◽  
Α Al2o3 ◽  
New Generation ◽  
Ods Alloy

The aim of the paper is to evaluate the effect of aluminum content on the oxidation resistance of new-generation of oxide dispersion strengthened (ODS) alloy at 1200 °C. Three grades of the alloy of chemical composition Fe-15Cr-xAl-4Y2O3 with different Al contents x = 0.3 wt.%, 2.0 wt.% and 5.5 wt.% are prepared by mechanical alloying. The alloys are consolidated by high temperature rolling followed by heat treatment. To study the oxidation resistance the samples are isothermally aged in the air for 1 h, 4 h, 16 h and 64 h at 1200 °C. The oxidation kinetics, composition and formation mechanism of the oxide layers are analyzed. The weight gain of prepared steels is estimated. The kinetics of oxidation is studied on metallographic cross-sections of the exposed samples by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) analysis. The oxides on the surfaces are identified by X‑ray diffraction (XRD) analysis. The Al content significantly enhances the oxidation resistance of the alloy. For a sufficiently high Al content in the alloy a compact oxide layer of α‑Al2O3 on the surface is formed, which significantly suppresses further oxidation process.

scholarly journals Synthesis of Hierarchical MOR-Type Zeolites with Improved Catalytic Properties

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4508
Author(s):  
Zeinab Mcheik ◽  
Ludovic Pinard ◽  
Joumana Toufaily ◽  
Tayssir Hamieh ◽  
T. Jean Daou
Keyword(s):  
Catalytic Activity ◽  
Amorphous Materials ◽  
Essential Role ◽  
Aluminum Content ◽  
Catalytic Properties ◽  
Hexadecyltrimethylammonium Bromide ◽  
Zeolite Framework ◽  
Ctab Concentration ◽  
Porous Volume ◽  
Synthesis Medium

Hierarchical MOR-type zeolites were synthesized in the presence of hexadecyltrimethylammonium bromide (CTAB) as a porogen agent. XRD proved that the concentration of CTAB in the synthesis medium plays an essential role in forming pure hierarchical MOR-type material. Above a CTAB concentration of 0.04 mol·L−1, amorphous materials are observed. These hierarchical mordenite possess a higher porous volume compared to its counterpart conventional micrometer crystals. Nitrogen sorption showed the presence of mesoporosity for all mordenite samples synthesized in the presence of CTAB. The creation of mesopores due to the presence of CTAB in the synthesis medium does not occur at the expense of zeolite micropores. In addition, mesoporous volume and BET surface seem to increase upon the increase of CTAB concentration in the synthesis medium. The Si/Al ratio of the zeolite framework can be increased from 5.5 to 9.1 by halving the aluminum content present in the synthesis gel. These synthesized hierarchical MOR-type zeolites possess an improved catalytic activity for n-hexane cracking compared to large zeolite crystals obtained in the absence of CTAB.

scholarly journals THE ALUMINUM CONTENT OF HUMAN AUTOPSY TISSUE

1928 ◽  
Vol 78 (3) ◽  
pp. 625-626
Author(s):  
Victor C. Myers ◽  
James W. Mull
Keyword(s):  
Aluminum Content ◽  
Autopsy Tissue ◽  
Human Autopsy
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