Synthesis of (Silico)aluminophosphate Molecular Sieves Using an Alkanolamine as a Novel Organic Structure-directing Agent

2015 ◽  
Vol 44 (10) ◽  
pp. 1300-1302
Author(s):  
Xiying Li ◽  
Watcharop Chaikittisilp ◽  
Zhendong Liu ◽  
Yutaka Yanaba ◽  
Takeshi Yoshikawa ◽  
...  
Keyword(s):  
Molecular Sieves ◽  
Structure Directing Agent ◽  
Organic Structure ◽  
Aluminophosphate Molecular Sieves

Titanium(IV) in the Organic-Structure-Directing-Agent-Free Synthesis of Hydrophobic and Large-Pore Molecular Sieves as Redox Catalysts

ChemSusChem ◽  
2015 ◽  
Vol 8 (15) ◽  
pp. 2476-2480 ◽  
Author(s):  
Jingui Wang ◽  
Toshiyuki Yokoi ◽  
Junko N. Kondo ◽  
Takashi Tatsumi ◽  
Yanli Zhao
Keyword(s):  
Molecular Sieves ◽  
Structure Directing Agent ◽  
Organic Structure ◽  
Large Pore ◽  
Redox Catalysts

Structure-directing study of 1-methylimidazolium-based dication with tetramethylene as spacer length in the synthesis of microporous silicoaluminophosphates

2021 ◽  
Author(s):  
Thayara Kellen Tavares ◽  
Gabrielli Almeida ◽  
Yuri Variani ◽  
Katia Bernardo-Gusmão ◽  
Paloma Vinaches ◽  
...  
Keyword(s):  
Structure Directing Agent ◽  
Spacer Length ◽  
Organic Structure ◽  
Directing Effect

In this work we study the structure-directing effect of 1-methylimidazolium-based dications with four methylene units as spacer length (4BI), as Organic Structure-Directing Agent (OSDA) in the synthesis of silicoaluminophosphate (SAPO)...

scholarly journals AFX Zeolite for Use as a Support of NH3-SCR Catalyst Mining through AICE Joint Research Project of Industries–Academia–Academia

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 163
Author(s):  
Masaru Ogura ◽  
Yumiko Shimada ◽  
Takeshi Ohnishi ◽  
Naoto Nakazawa ◽  
Yoshihiro Kubota ◽  
...  
Keyword(s):  
High Performance ◽  
Ionic Species ◽  
Research Project ◽  
Joint Research ◽  
Structure Directing Agent ◽  
Scr Catalyst ◽  
Organic Structure ◽  
Nh3 Scr ◽  
Joint Research Project ◽  
The One

This paper introduces a joint industries–academia–academia research project started by researchers in several automobile companies and universities working on a single theme. Our first target was to find a zeolite for NH3-SCR, that is, zeolite mining. Zeolite AFX, having the same topology of SSZ-16, was found to be the one of the zeolites. SSZ-16 can be synthesized by using an organic structure-directing agent such as 1,1′-tetramethylenebis(1-azonia-4-azabicyclo[2.2.2]octane; Dab-4, resulting in the formation of Al-rich SSZ-16 with Si/Al below five. We found that AFX crystallized by use of N,N,N′,N′-tetraethylbicyclo[2.2.2]oct-7-ene-2,3:5,6-dipyrrolidinium ion, called TEBOP in this study, had the same analog as SSZ-16 having Si/Al around six and a smaller particle size than SSZ-16. The AFX demonstrated a high performance for NH3-SCR as the zeolitic support to load a large number of divalent Cu ionic species with high hydrothermal stability.

scholarly journals Organic Structure-Directing Agent-Free Synthesis of Mordenite-Type Zeolites Driven by Al-Rich Amorphous Aluminosilicates

ACS Omega ◽  
2021 ◽  
Author(s):  
Ting Xiao ◽  
Mizuho Yabushita ◽  
Toshiki Nishitoba ◽  
Ryota Osuga ◽  
Motohiro Yoshida ◽  
...  
Keyword(s):  
Structure Directing Agent ◽  
Organic Structure

Preparation and Characterization of Ni-Containing Aluminophosphate Molecular Sieves

2011 ◽  
Vol 418-420 ◽  
pp. 617-620
Author(s):  
Ying Sun ◽  
Lan Ying Ge
Keyword(s):  
Oxidation State ◽  
Molecular Sieves ◽  
Molecular Sieve ◽  
Crystalline Form ◽  
Spectroscopic Techniques ◽  
Tetrahedral Coordination ◽  
Tetrahedral Geometry ◽  
Nickel Ions ◽  
Aluminophosphate Molecular Sieves

Aluminophosphate molecular sieve and Ni(II)-containing APO-5 materials were synthesized hydrothermally and characterized by various analytical and spectroscopic techniques. It indicates that the nickel ions with a divalent oxidation state can incorporate into the tetrahedral coordination in mesoporous aluminophosphate very well. The better crystallizing temperature is explored. A stronger crystalline form is obtained with the addition of HF. Further, microporous aluminophosphate molecular sieves and Ni(II) ions remain in a tetrahedral geometry even after calcination at 550 °C.

ChemInform Abstract: Aluminophosphate Molecular Sieves Comprised of Hydrated Triple Crankshaft Chains.

ChemInform ◽  
2010 ◽  
Vol 24 (24) ◽  
pp. no-no
Author(s):  
H.-X. LI ◽  
M. E. DAVIS ◽  
J. B. HIGGINS ◽  
R. M. DESSAU
Keyword(s):  
Molecular Sieves ◽  
Aluminophosphate Molecular Sieves

Catalytic dehydration of methanol to dimethyl ether over aluminophosphate and silico-aluminophosphate molecular sieves

2011 ◽  
Vol 12 (6) ◽  
pp. 535-538 ◽  
Author(s):  
Weili Dai ◽  
Wenbo Kong ◽  
Guangjun Wu ◽  
Niu Li ◽  
Landong Li ◽  
...  
Keyword(s):  
Dimethyl Ether ◽  
Molecular Sieves ◽  
Aluminophosphate Molecular Sieves
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