Surfactant-directed one-pot preparation of novel Ti-containing mesomaterial with improved catalytic activity and reusability

2018 ◽  
Vol 32 (10) ◽  
pp. e4471 ◽  
Author(s):  
Dawood Elhamifar ◽  
Omolbanin Yari ◽  
Shaaker Hajati
Keyword(s):  
Catalytic Activity ◽  
One Pot

scholarly journals Synthesis of tetrazolo[1,5-a]pyrimidine-6-carbonitriles using HMTA-BAIL@MIL-101(Cr) as a superior heterogeneous catalyst

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Hossein Abdollahi-Basir ◽  
Boshra Mirhosseini-Eshkevari ◽  
Farzad Zamani ◽  
Mohammad Ali Ghasemzadeh
Keyword(s):  
Ionic Liquid ◽  
Catalytic Activity ◽  
Reaction Time ◽  
Metal Organic Framework ◽  
One Pot ◽  
Short Reaction Time ◽  
Three Component Reaction ◽  
Metal Organic ◽  
Ft Ir ◽  
Novel Catalyst

AbstractA one-pot three component reaction of benzaldehydes, 1H-tetrazole-5-amine, and 3-cyanoacetyl indole in the presence of a new hexamethylenetetramine-based ionic liquid/MIL-101(Cr) metal–organic framework as a recyclable catalyst was explored. This novel catalyst, which was fully characterized by XRD, FE-SEM, EDX, FT-IR, TGA, BET, and TEM exhibited outstanding catalytic activity for the preparation of a range of pharmaceutically important tetrazolo[1,5-a]pyrimidine-6-carbonitriles with good to excellent yields in short reaction time.

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.

Deep Oxidative Desulfurization of Dibenzothiophene by Functional Tungsten-Containing Mesoporoussilica from Polyoxometalate-Based Salts

2014 ◽  
Vol 636 ◽  
pp. 93-96
Author(s):  
Ming Zhang ◽  
Wen Shuai Zhu ◽  
Meng Li ◽  
Yan An Li ◽  
Suhang Xun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Organic Solvents ◽  
Room Temperature ◽  
Oxidative Desulfurization ◽  
Catalytic Performance ◽  
Sulfur Compounds ◽  
High Dispersion ◽  
One Pot ◽  
Tungsten Species

Tungsten-containing functional mesoporousW-SiO2 have been successfully synthesized by an one-pot and facile room-temperature procedure. These materials presented a high dispersion of tungsten species and excellent catalytic activity on the removal of sulfur compounds without any organic solvents as extractants. The catalytic performance on sulfur compounds was investigated in detail. After recycling for 8 times, the removal of the oxidation desulfurization system could still reach 92.0%.

scholarly journals Use of pyrazoles as ligands greatly enhances the catalytic activity of titanium iso-propoxide for the ring-opening polymerization of l-lactide: a cooperation effect

RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 40690-40696
Author(s):  
Tzu-Fang Wang ◽  
Someswara Rao Kosuru ◽  
Shu-Chun Yu ◽  
Yung-Chi Chang ◽  
Hsin-Yu Lai ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
One Pot

Using TiOiPr4 with a pyrazole ligand for one-pot LA polymerization improved catalytic activity compared with using TiOiPr4 only.

scholarly journals Cu(II) and magnetite nanoparticles decorated melamine-functionalized chitosan: A synergistic multifunctional catalyst for sustainable cascade oxidation of benzyl alcohols/Knoevenagel condensation

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Zahra Alirezvani ◽  
Mohammad G. Dekamin ◽  
Ehsan Valiey
Keyword(s):  
Catalytic Activity ◽  
Knoevenagel Condensation ◽  
Ambient Pressure ◽  
Reaction Medium ◽  
Environmentally Benign ◽  
One Pot ◽  
Benzyl Alcohols ◽  
External Magnet ◽  
Multistep Synthesis ◽  
Multifunctional Catalyst

AbstractThe uniform decoration of Cu(II) species and magnetic nanoparticles on the melamine-functionalized chitosan afforded a new supramolecular biopolymeric nanocomposite (Cs-Pr-Me-Cu(II)-Fe3O4). The morphology, structure, and catalytic activity of the Cs-Pr-Me-Cu(II)-Fe3O4 nanocomposite have been systematically investigated. It was found that Cs-Pr-Me-Cu(II)-Fe3O4 nanocomposite can smoothly promote environmentally benign oxidation of different benzyl alcohol derivatives by tert-butyl hydroperoxide (TBHP) to their corresponding benzaldehydes and subsequent Knoevenagel condensation with malononitrile, as a multifunctional catalyst. Interestingly, Fe3O4 nanoparticles enhance the catalytic activity of Cu(II) species. The corresponding benzylidenemalononitriles were formed in high to excellent yields at ambient pressure and temperature. The heterogeneous Cs-Pr-Me-Cu(II)-Fe3O4 catalyst was also very stable with almost no leaching of the Cu(II) species into the reaction medium and could be easily recovered by an external magnet. The recycled Cs-Pr-Me-Cu(II)-Fe3O4 was reused at least four times with slight loss of its activity. This is a successful example of the combination of chemo- and bio-drived materials catalysis for mimicing biocatalysis as well as sustainable and one pot multistep synthesis.

scholarly journals Unraveling the impact of the Pd nanoparticle@BiVO4/S-CN heterostructure on the photo-physical & opto-electronic properties for enhanced catalytic activity in water splitting and one-pot three-step tandem reaction

2019 ◽  
Vol 1 (4) ◽  
pp. 1395-1412 ◽  
Author(s):  
Subhajyoti Samanta ◽  
Biswarup Satpati ◽  
Rajendra Srivastava
Keyword(s):  
Catalytic Activity ◽  
Electronic Properties ◽  
Water Splitting ◽  
Tandem Reaction ◽  
One Pot ◽  
Pd Nanoparticle ◽  
The Impact

Influence of Pd NPs in the BiVO4/S-CN photocatalyst is demonstrated for the efficient water splitting and imine synthesis via tandem reaction.

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