Page 174 - CW E-Magazine (13-2-2024)

Special Report For your requirements of:
D-(-)-Tartaric Acid w L-(+)-Tartaric Acid
DL Tartaric Acid
binding sites is reported and has the size Zwitterionic “Solutions” for Process design and optimisation Disodium Octaborate Tetrahydrate
of C H molecule, which can allow more reversible CO capture of enzymatic reaction distilla- (Boron 20%)
6
2
accessible channel surfaces for C H . For 2 tion (RD) Zinc Borate
6
2
50/50 mixture, selectivity of 2.82 and G.L.P. Aydos et al have worked on the [This column has covered many papers on Boric Acid (Boron 17%)
C H uptake of 53.8 cc per gm at 25°C Zwitterions resulting from the covalent RD where the exothermicity of the reac- Boric Oxide w Boron Oxide
2
6
and 1 bar is reported. DFT calculations attachment of 3- or 4-hydroxybenzene tion is gainfully employed and large scale Borax Anhydrous
were done. (Sepn. Purfn. Technol., 2023, to the 1,3-dimethylimidazolium cation, adoption has been reported eg MTBE] Borax Pentahydrate (Boron 15%)
323, 15 Oct., 124465; DOI:10.1016/j. which have pKa of 8.68 and 8.99 in Borax Decahydrate (Boron 10.5%)
seppur.2023.124465). aqueous solutions, respectively. This J. Liang et al have worked on the high Contact :
efficiency of enzymatic reaction and Satyanarain & Co. /
Tailoring chemical absorp- distillation separation to get over the LCG Eximchem Pvt Ltd
tion-precipitation to lower the limiting effects of reaction equilibrium; 21-22 Abhishek, 303, Samuel Street, Vadgadi, Mumbai - 400 003.
regeneration energy of a CO product inhibition and the difficulty of Phone: +91- 22 - 23437035 / 23423229 / 49744840
Cell: +91- 9820496607 / 9930817512
capture plant 2 product recovery. The lipase CALB was Email: satyainfo.gupta@gmail.com/info@lcgexim.com/
lcgeximchem@gmail.com
[This column has covered many papers immobilized and coated on the θ-ring
by sol-gel method. The test reactor was
on this topic as CO removal, with mini- synthesis of n-butyl acetate by trans- AVAILABLE
2
mal energy consumption in regeneration, esterification. Their work shows long IODINE
has become important in the context of term stability of immobilized enzyme and Calcium Iodate Iodine Trichloride
climate change.] Copper Iodide Periodic Acid Solution
upto 120 days was tested. [Sepn.Purfn. Ethyl Iodide Potassium Iodate
Technology, 2023, 327, 15 Dec, 12488; Hydroiodic Acid
G.G. Jang et al have investigated DOI:10.1016/j.seppur.2023.124888]. Iodic acid Solution Potassium Iodide
CO fixation in a solid form through Iodine Povidone Iodine
Sodium Iodide
2
solvation followed by ionic self- Separation of volatile organic Methyl Iodide Sodium Metaperiodate
assembly-aided precipitation without solution chemisorbs CO in aqueous compounds (VOCs) from Tri Methyl Sulfoxonium Iodide
2
requiring high energy for solvent re- solutions 0.58 mole per mole of CO viscous liquids with Rotating SELENIUM
2
at 1.2 bar (absolute) and 40°C. Further, Selenium Dioxide Sodium Selenate
equimolar amount of chemisorbed CO Packed Bed (RPB) technology Selenium Metal Selenium Sulfide
2
in these solution are found at 10 bar J. Koop et al have worked on the title Sodium Selenite
Manufacturers & Supplier By
and 40°C. Bicarbonate ions are formed problem which is frequently encountered RITESH CHEMICAL INDUSTRIES PVT LTD
in the aqueous solution and energy is in industry as invariably there is require- B1/304,2nd Floor, Laram Centre, M.A Road,
lower than MDEA solution. The solution ment of very low content of VOC’s. The Near Andheri Railway Station, Andheri (West),
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was recycled 20 times. (ChemSusChem; system considered was polysiloxane Phone: 8767854756, 9920868483, 9867260490
DOI: 10.1002/cssc.202300971). Email: riteshchemicalindustriespvtltd@gmail.com
Website: www.riteshchemicalsindustries.com
Adsorption and desorption
behaviours of NH on zeolites Available Regularly for LOCAL / EXPORTS Available
3
at 200°C by the pressure-swing 2,4-DI CHLORO PHENOL FORMALIN TOLUENE ACETIC ACID
BUTANOL BENZENE
THF
method 2,4,6-TRI CHLORO PHENOL GLYCERINE XYLENE ACETONE
M. Tokushige and J. Ryu have studied which was subjected to the low mol. 2,6-DI CHLORO PHENOL SORBITOL MIBK HEXANE
generation. Thus monovalent Na was various zeolites – Y, A, L and mordenite – wt. cyclic siloxane components and the PARA CHLORO PHENOL Contact: MONISH CHEMICALS
+
introduced into an aqueous solution and the effect of their pore sizes, VOC xylene at 140°C. The pressure Email: monishchemicals@yahoo.com (2)
of 1,6-hexanediamine. This strategy countercation species, and the number in the RPB was in the range of 5-20 ORTHO CHLORO PHENOL Mobile: 9323040835 / 8850079682
results in energy consumption of 3.4 of adsorption sites on the adsorb of mbar and rotational speed from 300- PARA ANISIDINE
GJ/tonne CO , which is lower than NH . It is useful to find that despite repe- 1500 rpm. In addition counter currently ORTHO ANISIDINE Manufacturers & Exporters of
Iso Amyl Alcohol
2
3
the state-of-the art polyethyleneimine, titive lattice expansion and shrinkage flowing stripping gas was used and this n-Amyl Alcohol
CaCO and bis-iminoguanidines sys- that the morphologies of the zeolite resulted in further lowering of VOC’s. Contact Manufacturers: (1-Pentanol / n-Pentanol) Purity >99%
3
Mix Butanol
tems; which require 3.5-10.2 GJ/tonne particles were not degraded. This work This study shows that RPB can be an 109, ‘Udyog Kshetra’, 1st Floor, • Specifications & Quality as per International Standards
CO . Molecular dynamic simulation shows the utility of using zeolites. (ACS effective way for the title objective. [Ind. Mulund - Goregaon Link Road, Off. L.B.S. Marg, • Export Inquiries Solicited
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were done. (ChemSusChem; DOI: Omega, 2023; DOI: 10.1021/acsome- Eng.Chem.Res., 2023, DOI:10.1021/acs. Mulund (West), Mumbai 400 080. Please Contact: Yashvardhan Industries
10.1002/cssc.202300735). ga.3C02882). iecr.3C01597]. Tel.: +91-22-67976640, 67976657 49 C, Maxi Road Indl. Area, Ujjain - 10. MP.
Email: info@valiantorganics.com (M): 09301811009, 09425093006
(E): yash@yashvindustries.in w (W): www.yashvindustries.in
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174 Chemical Weekly February 13, 2024
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