scholarly journals A facile catalyst and solvent-free synthesis of spiro thia heterocycles on grinding

2011 ◽  
Vol 76 (10) ◽  
pp. 1339-1346 ◽  
Author(s):  
Anshu Dandia ◽  
Ruby Singh ◽  
Ashok Laxkar
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Room Temperature ◽  
Solvent Free ◽  
Good Option ◽  
Solvent Free Synthesis

An efficient and mild method for the synthesis of spiro [1,3- oxathiolan/oxathianes] in the solid state reaction at room temperature has been described. This method is a good option to obtain the title compounds in quantitative yields in a simple and inexpensive way. Applying this methodology, different thia heterocycles were synthesized.

Room Temperature Solvent-Free Synthesis of Monodisperse Magnetite Nanocrystals

2006 ◽  
Vol 6 (3) ◽  
pp. 852-856 ◽  
Author(s):  
X. R. Ye ◽  
C. Daraio ◽  
C. Wang ◽  
J. B. Talbot ◽  
S. Jin
Keyword(s):  
Oleic Acid ◽  
Solid State ◽  
Large Scale ◽  
Room Temperature ◽  
Solvent Free ◽  
Two Dimensional ◽  
New Process ◽  
High Boiling Point ◽  
Magnetite Nanocrystals ◽  
Solvent Free Synthesis

We have successfully demonstrated a facile, solvent-free synthesis of highly crystalline and monodisperse Fe3O4 nanocrystallites at ambient temperature avoiding any heating. Solid state reaction of inorganic Fe(II) and Fe(III) salts with NaOH was found to produce highly crystalline Fe3O4 nanoparticles. The reaction, if carried out in the presence of surfactant such as oleic acid–oleylamine adduct, generated monodisperse Fe3O4 nanocrystals extractable directly from the reaction mixture. The extracted nanoparticles were capable of forming self-assembled, two-dimensional and uniform periodic array. The new process utilizes inexpensive and nontoxic starting materials, and does not require a use of high boiling point and toxic solvents, thus is amenable to an environmentally desirable, large-scale synthesis of nanocrystals.

Preparation of High-Purity Ultrafine α-Al2O3 by Solid-State Reaction at Room Temperature

2008 ◽  
Vol 368-372 ◽  
pp. 683-685
Author(s):  
Cheng Wei Hao ◽  
Bo Lin Wu ◽  
Ji Yan Li
Keyword(s):  
Solid State ◽  
High Purity ◽  
Solid State Reaction ◽  
Room Temperature ◽  
Raw Materials ◽  
Phase Particle ◽  
Phase Transformation Temperature ◽  
Particle Size And Morphology ◽  
Size And Morphology ◽  
Α Al2o3

Ammonium aluminium carbonate hydroxide (AACH), with a small quantity of γ-AlOOH, was synthesized through solid-state reaction at room temperature using AlCl3·6H2O and NH4HCO3 as raw materials and polyethylene glycol (PEG-10000) as the dispersant. After calcined at 1100°C for 1.5h, α-Al2O3 powders with primary particle sizes of 20~30nm were obtained. The crystal phase, particle size and morphology of the high-purity ultrafine α-Al2O3 were characterized. The results showed that a small quantity of γ-AlOOH in the AACH decomposed and formed crystal seeds. The presence of crystal seeds reduced the nucleation activation energy and therefore reduced the phase transformation temperature.

Co/Mn-Coated LiNiO2 Cathode Materials by Solid-State Reaction at Room Temperature

2008 ◽  
Vol 37 (11) ◽  
pp. 1881-1886 ◽  
Author(s):  
Guorong Hu ◽  
Xinrong Deng ◽  
Zhongdong Peng ◽  
Ke Du ◽  
Yanbin Cao ◽  
...  
Keyword(s):  
Solid State ◽  
Cathode Materials ◽  
Solid State Reaction ◽  
Room Temperature

Thermal study of NiC2O4·2H2O obtained by a solid state reaction at room temperature and normal pressure

1987 ◽  
Vol 118 ◽  
pp. 123-134 ◽  
Author(s):  
M.E. García-Clavel ◽  
M.J. Martinez-Lope ◽  
M.T. Casais-Alvarez
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Room Temperature ◽  
Normal Pressure ◽  
Thermal Study

Facile preparation of polyoxometalate nanoparticles via a solid-state chemical reaction for aerobic oxidative desulfurization catalysis

2021 ◽  
Author(s):  
Hang Yu ◽  
Wenwen Bu ◽  
Zijia Wang ◽  
Zhuoyue Zhao ◽  
Mehwish Jadoon ◽  
...  
Keyword(s):  
Solid State ◽  
Silver Nitrate ◽  
Chemical Reaction ◽  
Solid State Reaction ◽  
Room Temperature ◽  
Oxidative Desulfurization ◽  
Solid State Reaction Method ◽  
Reaction Method ◽  
State Chemical ◽  
Facile Preparation

Polyoxometalate nanoparticles were synthesized via a concise solid-state reaction method by directly grinding silver nitrate and the polyoxometalate (NH4)5H6PMo4V8O40 at room temperature without the assistance of a surfactant.

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