One-pot synthesis of Na+-free Cu-SSZ-13 and its application in the NH3-SCR reaction

2021 ◽  
Author(s):  
Juan Wang ◽  
Linying Wang ◽  
Dali Zhu ◽  
Wenhao Cui ◽  
Peng Tian ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
High Yield ◽  
Cooperative Strategy ◽  
One Pot ◽  
Rapid Crystallization ◽  
Cu Content ◽  
One Pot Synthesis ◽  
Nh3 Scr

Na+-free Cu-SSZ-13 zeolites have been rationally synthesized via a cooperative strategy, which has the advantages of rapid crystallization (9-48h), high yield (86-94%) and adjustable Cu content. The NH3-SCR catalytic performance...

scholarly journals Novel Preparation of Cu and Fe Zirconia Supported Catalysts for Selective Catalytic Reduction of NO with NH3

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 55
Author(s):  
Katarzyna Świrk ◽  
Ye Wang ◽  
Changwei Hu ◽  
Li Li ◽  
Patrick Da Costa ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Supported Catalysts ◽  
Catalytic Performance ◽  
Experimental Conditions ◽  
One Pot ◽  
Nh3 Scr ◽  
Scr Of No ◽  
Temperature Programmed ◽  
Stationary Sources

Copper and iron promoted ZrO2 catalysts were prepared by one-pot synthesis using urea. The studied catalysts were characterized by XRD, N2 physisorption, XPS, temperature-programmed desorption of NH3 (NH3-TPD), and tested by the selective catalytic reduction by ammonia (NH3-SCR) of NO in the absence and presence of water vapor, under the experimental conditions representative of exhaust gases from stationary sources. The influence of SO2 on catalytic performance was also investigated. Among the studied catalysts, the Fe-Zr sample showed the most promising results in NH3-SCR, being active and highly selective to N2. The addition of SO2 markedly improved NO and NH3 conversions during NH3-SCR in the presence of H2O. The improvement in acidic surface properties is believed to be the cause.

scholarly journals Preparation of Ni-IL/SiO2 and its catalytic performance for one-pot sequential synthesis of 2-propylheptanol from n-valeraldehyde

RSC Advances ◽  
2020 ◽  
Vol 10 (47) ◽  
pp. 28100-28105
Author(s):  
Hualiang An ◽  
Di Wang ◽  
Shuang Miao ◽  
Qiusheng Yang ◽  
Xinqiang Zhao ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
One Pot ◽  
One Pot Synthesis ◽  
The One ◽  
Excellent Catalytic Performance

The prepared Ni-IL/SiO2 catalyst exhibits an excellent catalytic performance in the one-pot synthesis of 2-propylheptanol: the yield of 2-propylheptanol attained 75.4%.

A new one-pot synthesis of μ-oxo dimeric iron(III) porphyrins from meso-tetraarylporphyrins

2009 ◽  
Vol 13 (08n09) ◽  
pp. 854-858 ◽  
Author(s):  
Qiang Liu ◽  
Yan-Zhi Gong ◽  
Chang-Jun Gong ◽  
Qing-Hong Li ◽  
Can-Cheng Guo
Keyword(s):  
Synthetic Methods ◽  
High Yield ◽  
Reaction Intermediates ◽  
Ferrous Chloride ◽  
Iron Porphyrins ◽  
One Pot ◽  
Convenient Procedure ◽  
One Pot Synthesis ◽  
New Synthesis ◽  
The One

A new synthesis of μ-oxo dimeric iron(III) porphyrins from meso-tetraarylporphyrins in one-pot procedure is reported. μ-oxo dimeric iron(III) porphyrin was obtained in high yield (up to 93%) from the reaction of meso-tetraarylporphyrin with ferrous chloride in DMF at pH 8–11. Compared with other synthetic methods of μ-oxo dimeric iron(III) porphyrin from meso-tetraarylporphyrins, the one-pot procedure has higher yields of μ-oxo dimeric iron(III) porphyrins and is a simpler and more convenient procedure. In order to evaluate the range of applicability of this method, μ-oxo dimeric iron(III) porphyrins with different substituents were prepared by the reaction of the corresponding meso-tetraarylporphyrins with ferrous chloride. The results showed that it was possible to apply this one-pot procedure to the synthesis of other μ-oxo dimeric iron porphyrins in excellent yields. A mechanism for the formation of μ-oxo dimeric iron porphyrins was proposed based on the reaction intermediates characterized by HPLC and UV-vis methods.

One-pot synthesis of carbon-coated Fe3O4 nanoparticles with tunable size for production of gasoline fuels

2018 ◽  
Vol 42 (13) ◽  
pp. 10861-10867 ◽  
Author(s):  
Junling Tu ◽  
Jiaojiao Yuan ◽  
Shimin Kang ◽  
Yongjun Xu ◽  
Tiejun Wang
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Direct Synthesis ◽  
Catalytic Performance ◽  
One Pot ◽  
One Pot Synthesis ◽  
Carbon Coated ◽  
Excellent Catalytic Performance

Fe3O4@C nanoparticles with tunable size exhibit excellent catalytic performance in the direct synthesis of gasoline fuels.

Preparation of a ternary Pd–Rh–P amorphous alloy and its catalytic performance in selective hydrogenation of alkynes

2014 ◽  
Vol 4 (7) ◽  
pp. 1920-1924 ◽  
Author(s):  
Mengrui Ren ◽  
Changming Li ◽  
Jiale Chen ◽  
Min Wei ◽  
Shuxian Shi
Keyword(s):  
Amorphous Alloy ◽  
Selective Hydrogenation ◽  
Synthesis Method ◽  
Catalytic Performance ◽  
Alloy Nanoparticles ◽  
One Pot ◽  
One Pot Synthesis ◽  
Catalytic Behaviour

Palladium–rhodium–phosphorus amorphous alloy nanoparticles were prepared via a facile one-pot synthesis method, exhibiting excellent catalytic behaviour in selective hydrogenation of alkynes.

Lewis Acid Promoted, One-Pot Synthesis of Fluoroquinolone Clubbed 1,3,4-Thiadiazole Motifs under Microwave Irradiation: Their Biological Activities

2020 ◽  
Vol 7 (1) ◽  
pp. 60-66
Author(s):  
Navin B. Patel ◽  
Rahul B. Parmar ◽  
Hetal I. Soni
Keyword(s):  
Reaction Time ◽  
Microwave Irradiation ◽  
Lewis Acid ◽  
Acid Catalyst ◽  
Antitubercular Activity ◽  
Biologically Active ◽  
High Yield ◽  
One Pot ◽  
One Pot Synthesis ◽  
Lewis Acid Catalyst

Background: A Lewis acid promoted efficient and facile procedure for one-pot synthesis of a novel series of fluoroquinolone clubbed with thiadiazoles motifs under microwave irradiation is described here. This technique has more advantages such as high yield, a clean procedure, low reaction time, simple work-up and use of Lewis acid catalyst. Objective: Our aim is to generate a biologically active 1,3,4- thiadiazole ring system by using a onepot synthesis method and microwave-assisted heating. High yield and low reaction time were the main purposes to synthesize bioactive fluoroquinolone clubbed 1,3,4- thiadiazole moiety. Methods: Fluoroquinolone Clubbed 1,3,4-Thiadiazole Motifs was prepared by Lewis acid promoted, one-pot synthesis, under microwave irradiation. All the synthesized molecules were determined by IR, 1H NMR, 13C NMR, and Mass spectra. The antimicrobial activity of synthesized compounds was examined against two Gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa), two Gram-positive bacteria (Staphylococcus aureus, Streptococcus pyogenes), and three fungi (Candida albicans, Aspergillus niger, Aspergillus clavatus) using the MIC (Minimal Inhibitory Concentration) method and antitubercular activity H37Rv using L. J. Slope Method. Results: Lewis acid promoted, one-pot synthesis of Fluoroquinolone clubbed 1,3,4-Thiadiazole motifs under microwave irradiation is an extremely beneficial method because of its low reaction time and good yield. Some of these novel derivatives showed moderate to good in vitro antibacterial, antifungal, and antitubercular activity. Conclusion: One-pot synthesis of 1,3,4-Thiadiazole by using Lewis acid catalyst gives a good result for saving time and also getting more production of novel heterocyclic compounds with good antimicrobial properties via microwave heating method.

High Yield One-Pot Synthesis of Some NovelN-Methyl Isoxazolidine Derivatives UsingN-Methyl-α-chloro Nitrone in Water

2012 ◽  
Vol 49 (5) ◽  
pp. 1260-1265 ◽  
Author(s):  
Bhaskar Chakraborty ◽  
Prawin Kumar Sharma ◽  
Manjit Singh Chhetri
Keyword(s):  
High Yield ◽  
One Pot ◽  
One Pot Synthesis

Aqua-mediated one-pot synthesis and aromatization of pyrimido-fused 1,4-dihydropyridine derivatives using ammonium salts

2007 ◽  
Vol 85 (5) ◽  
pp. 400-405 ◽  
Author(s):  
Mazaahir Kidwai ◽  
Kavita Singhal
Keyword(s):  
Ammonium Nitrate ◽  
Single Step ◽  
Ammonium Salts ◽  
Environmentally Benign ◽  
High Yield ◽  
Pyridine Derivatives ◽  
One Pot ◽  
One Pot Synthesis ◽  
Synthetic Procedure ◽  
Dihydropyridine Derivatives

Dipyrimidine-fused pyridine derivatives were synthesized using 1,3-diketone, aldehyde, different ammonium salts, and water, as the solvent. Aromatization was observed when ammonium nitrate was used as the source of nitrogen, and thus, dipyrimidine-fused pyridine derivatives were synthesized in one-pot synthetic procedure. This environmentally benign procedure leads to high yield of products (80%–90%) in a single step, with greater purity using water as the solvent.Key words: water, aromatization, dipyrimidopyridine, ammonium salts.

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