Conjugate acid-base pairs in zeolites

1984 ◽  
Vol 88 (1) ◽  
pp. 42-45 ◽  
Author(s):  
D. Barthomeuf
Keyword(s):  
Acid Base ◽  
Base Pairs ◽  
Conjugate Acid

Improved solid-state stability of salts by cocrystallization between conjugate acid–base pairs

CrystEngComm ◽  
2013 ◽  
Vol 15 (29) ◽  
pp. 5756 ◽  
Author(s):  
Sathyanarayana Reddy Perumalla ◽  
Changquan Calvin Sun
Keyword(s):  
Solid State ◽  
Acid Base ◽  
Base Pairs ◽  
Conjugate Acid ◽  
Solid State Stability

scholarly journals Ambient synthesis of nanomaterials by in situ heterogeneous metal/ligand reactions

Nanoscale ◽  
2019 ◽  
Vol 11 (29) ◽  
pp. 14060-14069 ◽  
Author(s):  
Boyce S. Chang ◽  
Brijith Thomas ◽  
Jiahao Chen ◽  
Ian D. Tevis ◽  
Paul Karanja ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Self Assembly ◽  
Liquid Metals ◽  
Acid Base ◽  
Base Pairs ◽  
Conjugate Acid ◽  
Synthesis Of Nanomaterials ◽  
Metal Ligand

Coordination polymers are ideal synthons for high aspect ratio nanomaterials. Using conjugate acid-base pairs, liquid metals are etched and chelated in situ. Solubility-driven polymerization, precipitation, and self-assembly gives tunable structures.

A promising Al-CeZrO4/HPW-incorporated SPEEK composite membrane with improved proton conductivity and chemical stability for PEM fuel cells

2020 ◽  
pp. 095400832095707
Author(s):  
Yingfeng Wang ◽  
Jiabin You ◽  
Zhuowei Cheng ◽  
Kun Jiang ◽  
Linlin Zhang ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Composite Membrane ◽  
Chemical Stability ◽  
Pem Fuel Cells ◽  
Nanocomposite Membrane ◽  
Acid Base ◽  
Base Pairs ◽  
Ether Ether Ketone ◽  
Poly Ether Ether Ketone ◽  
Speek Membrane

An improved sulfonated poly (ether ether ketone) (SPEEK) nanocomposite membrane was prepared by incorporating both phosphotungstic acid (HPW) and Al doped cerium-based oxides (Al-CeZrO4) in SPEEK matrix. The HPW was immobilized by Al-CeZrO4 so that firmly dispersed acid–base pairs were formed. The introduction of Al-CeZrO4 helped improve the chemical stability of the pristine (baseline) SPEEK membrane without compromising the conductivity, and the addition of HPW further enhanced the conduction of protons through acid–base interactions. Stability tests showed that when the SPEEK/Al-CeZrO4 nanocomposite membrane was immersed in a Fenton’s solution for 108 h at 80°C, a loss of 34.9% in proton conductivity was observed, which is 24.1% less than that of the pristine SPEEK membrane, indicating that the attenuation of membrane proton conductivity was inhibited. At the same time, the proton conductivity of the SPEEK/Al-CeZrO4/HPW nanocomposite membrane (that has already incorporated HPW) was increased by 15.5% compared to the SPEEK/Al-CeZrO4 nanocomposite membrane. Hence, Al-CeZrO4/HPW is considered as an effective inorganic nanofiller for improving both proton conductivity and chemical stability of SPEEK membranes, and the hybrid composite membrane is worth further studying.

scholarly journals Sc3N@Ih-C80 as a novel Lewis acid to trap abnormal N-heterocyclic carbenes: the unprecedented formation of a singly bonded [6,6,6]-adduct

2016 ◽  
Vol 7 (3) ◽  
pp. 2331-2334 ◽  
Author(s):  
Muqing Chen ◽  
Lipiao Bao ◽  
Min Ai ◽  
Wangqiang Shen ◽  
Xing Lu
Keyword(s):  
Lewis Acid ◽  
Heterocyclic Carbenes ◽  
Acid Base ◽  
Base Pairs ◽  
Endohedral Metallofullerenes ◽  
Carbon Based

An unprecedented singly bonded [6,6,6]-adduct with an abnormal N-heterocyclic carbene structure, represents the first example of carbon-based Lewis acid–base pairs based on endohedral metallofullerenes.

ChemInform Abstract: Taking the F Out of FLP: Simple Lewis Acid-Base Pairs for Mild Reductions with Neutral Boranes via Borenium Ion Catalysis.

ChemInform ◽  
2013 ◽  
Vol 44 (16) ◽  
pp. no-no
Author(s):  
Patrick Eisenberger ◽  
Adrian M. Bailey ◽  
Cathleen M. Crudden
Keyword(s):  
Lewis Acid ◽  
Acid Base ◽  
Base Pairs

Self-adjusted synthesis of ordered stable mesoporous minerals by acid–base pairs

2003 ◽  
Vol 2 (3) ◽  
pp. 159-163 ◽  
Author(s):  
Bozhi Tian ◽  
Xiaoying Liu ◽  
Bo Tu ◽  
Chengzhong Yu ◽  
Jie Fan ◽  
...  
Keyword(s):  
Acid Base ◽  
Base Pairs
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