ZSM-5 Zeolite Nanosheets with Improved Catalytic Activity Synthesized Using a New Class of Structure-Directing Agents

2014 ◽  
Vol 20 (36) ◽  
pp. 11511-11521 ◽  
Author(s):  
Rajkumar Kore ◽  
Rajendra Srivastava ◽  
Biswarup Satpati
Keyword(s):  
Catalytic Activity ◽  
New Class ◽  
Structure Directing Agents

scholarly journals One-pot three-component tandem annulation of 4-hydroxycoumarine with aldehyde and aromatic amines using graphene oxide as an efficient catalyst

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rabindranath Singha ◽  
Aminul Islam ◽  
Pranab Ghosh
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Aromatic Amines ◽  
Significant Loss ◽  
Solvent Free ◽  
One Pot ◽  
Efficient Catalyst ◽  
New Class ◽  
Broad Scope ◽  
Plausible Mechanism

AbstractA convenient and efficient solvent-free, facile, one-pot three-component graphene oxide catalysed approach has been described for the synthesis of chromeno-[4,3-b]quinolin-6-one derivatives from 4-hydroxycoumarin with aldehydes and aromatic amines. Graphene oxide (GO) has proved to be a new class of heterogeneous carbocatalyst which could be easily recovered and reused up to 5th run without significant loss of its catalytic activity. A broad scope of substrate applicability is offered and a plausible mechanism is also suggested for this developed protocol.

scholarly journals Synthesis and Properties of Lanthanide-Exchanged Preyssler's Heteropolyanions

1994 ◽  
Vol 368 ◽  
Author(s):  
Mark R. Antonio ◽  
J. Malinsky ◽  
L. Soderholm
Keyword(s):  
Catalytic Activity ◽  
Homogeneous Solution ◽  
Potential Significance ◽  
Lanthanide Ion ◽  
Solid Catalysts ◽  
New Class ◽  
Trivalent Lanthanide ◽  
Heterogeneous Solid

ABSTRACTNa+ in the Preyssler heteropolytungstate anion [NaP5W30O110]14− can be exchanged for a trivalent lanthanide ion. The potential significance of this new class of lanthanide heteropolyanions relates to their applications in catalysis science. This view follows from the fact that Keggin heteropolyanions and their free acids are used as heterogeneous solid catalysts and homogeneous solution catalysts. We describe synthetic conditions that lead to the incorporation of Ce3+ and Pr3+ within the Preyssler anion, and the coprecipitation of Ce3+ and the Preyssler anion. Initial studies indicate that the latter, coprecipitated, material deserves study for bifunctional catalytic activity.

Conductive MOFs as bifunctional oxygen electrocatalysts for all-solid-state Zn–air batteries

2020 ◽  
Vol 56 (88) ◽  
pp. 13615-13618 ◽  
Author(s):  
Na Pan ◽  
Hanwen Zhang ◽  
Bo Yang ◽  
Hui Qiu ◽  
Longyan Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solid State ◽  
High Catalytic Activity ◽  
Bifunctional Electrocatalyst ◽  
New Class

A new class of conductive MOFs can be directly used as a bifunctional electrocatalyst for both the ORR and OER. By adding Ru into the pristine MOF, the resultant catalyst exhibits high catalytic activity in all-solid-state Zn–air batteries.

Synthesis and catalytic activity of a new class of cyclophosphazenic polypodands

1993 ◽  
Vol 30 (1) ◽  
pp. 93-96 ◽  
Author(s):  
Maria Paola Bullitta ◽  
Elias Maccioni ◽  
Luciana Corda ◽  
Gianni Podda
Keyword(s):  
Catalytic Activity ◽  
New Class

ChemInform Abstract: Synthesis and Catalytic Activity of a New Class of Cyclophosphazenic Polypodands.

ChemInform ◽  
2010 ◽  
Vol 24 (34) ◽  
pp. no-no
Author(s):  
M. P. BULLITTA ◽  
E. MACCIONI ◽  
L. CORDA ◽  
G. PODDA
Keyword(s):  
Catalytic Activity ◽  
New Class

Quantum Dots Based Materials for Water Treatment

2021 ◽  
pp. 280-304
Keyword(s):  
Heavy Metals ◽  
Quantum Dots ◽  
Catalytic Activity ◽  
Water Treatment ◽  
Emission Spectra ◽  
Photo Catalytic Activity ◽  
New Class ◽  
Synthesis Properties ◽  
Sensing Application ◽  
Future Outcomes

Quantum dot is a new class of nanomaterials having size in nanometers (˂10 nm). This material has excellent photo-catalytic activity towards dyes and pollutants with great absorbance and photoluminescence properties. It shows shifting of peak in UV-FL data which indicates the excitation dependent emission spectra means tunable properties in different wavelength and this property makes it a wonderful probe for sensing application for different heavy metals, pollutants present in water. In this chapter the synthesis, properties, types, application of quantum dots and focus on the research that has been done in field of water treatment with possible future outcomes is discussed.

Effect of desilication on the textural properties, acidity and catalytic activity of zeolite ZSM-23 synthesized with different structure-directing agents

2019 ◽  
Vol 290 ◽  
pp. 109647 ◽  
Author(s):  
Bruno J.B. Silva ◽  
Lenivaldo V. Sousa ◽  
Lais R.A. Sarmento ◽  
Rosângela P. Carvalho ◽  
Paulo H.L. Quintela ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Textural Properties ◽  
Structure Directing Agents

Molecule-level graphdiyne coordinated transition metals as a new class of bifunctional electrocatalysts for oxygen reduction and oxygen evolution reactions

2019 ◽  
Vol 21 (35) ◽  
pp. 19651-19659 ◽  
Author(s):  
Zhen Feng ◽  
Renyi Li ◽  
Yaqiang Ma ◽  
Yi Li ◽  
Dong Wei ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Transition Metals ◽  
Oxygen Reduction ◽  
Oxygen Evolution ◽  
Single Atom ◽  
High Catalytic Activity ◽  
New Class ◽  
Bifunctional Electrocatalysts

Graphdiyne (GDY) could provide a unique platform for synthesizing uniform single-atom catalysts (SACs) with high catalytic activity toward oxygen reduction (ORR) and oxygen evolution (OER) reactions.

scholarly journals A new class of solid Lewis acid catalysts based on interlayer expansion of layered silicates of the RUB-36 type with heteroatoms

2014 ◽  
Vol 2 (25) ◽  
pp. 9709-9717 ◽  
Author(s):  
Trees De Baerdemaeker ◽  
Hermann Gies ◽  
Bilge Yilmaz ◽  
Ulrich Müller ◽  
Mathias Feyen ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Lewis Acid ◽  
Layered Silicates ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts ◽  
New Class

Interlayer expansion of the layered zeolite precursor RUB-36 in presence of an Fe source simultaneously achieved the expansion and the introduction of catalytic activity.

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