Sep-Pak Amino Propyl (NH2) Vac cartridges contain a moderately polar, silica-based bonded phase with weakly basic surface. The sorbent can be used as a polar sorbent with different selectivity for acidic/basic analytes or as a weak anion exchanges in ...
Sep-Pak Amino Propyl (NH2) Plus Light cartridges contain a moderately polar, silica-based bonded phase with weakly basic surface. The sorbent can be used as a polar sorbent with different selectivity for acidic/basic analytes or as a weak anion exchanges in ...
Evacuation at 473K leads to a strong (and reversible) decrease in the population of the structural OH groups in UiO-66 and creation of a fraction of more acidic hydroxyls (ΔtνOH=108cm1). Similar results were obtained with the DMF-free UiO-66-NH2: the ΔtνOH was 91 cm1 for a ...
This is unanimous with previous works in which FA was identified as a precursor to form formate esters rather than as an acidic catalyst to accelerate the hydrogenolysis of 5-hydroxymethylfural to 2,5-dimethylfuran at relatively high temperature (>120°C).32, 33, 34 Thus, two possible ...
New MOF-based corrosion inhibitor for carbon steel in acidic media. Met. Mater. Int. 26, 25–38. https://doi.org/10.1007/s12540-019-00307-1 (2020). 25. Cao, K., Yu, Z. & Yin, D. Preparation of Ce-MOF@TEOS to enhance the anti-corrosion properties ...
It takes place by mixing an acidic and a basic chemical entity together. It leads to a formation of a conjugate acid by the acceptance of a proton by the basic entity and a conjugate base by the donation of a proton by the acidic entity....
In this study, a porous nanocontainer from UiO-66-NH2/CNTs nanocomposite with an excellent barrier characteristics was constructed through amine-functionalized Zr-based metal organic framework. The characterization of the prepared nano-materials were per
Evacuation at 473 K leads to a strong (and reversible) decrease in the population of the structural OH groups in UiO-66 and creation of a fraction of more acidic hydroxyls (Delta(t)nu(OH) = -108 cm(-1)). Similar results were obtained with the DMF-free UiO-66-NH2: the Delta(t)...
The Ac-His-dPhe-Arg-Trp-NH2 tetrapeptide is a nonselective melanocortin agonist and replacement of Arg in the tetrapeptide with acidic, basic or neutral amino acids results in reduced potency at the melanocortin receptor (MCR) isoforms (MC1R and MC3-5R). To determine the importance of the ...
Sep-Pak Amino Propyl (NH2) Vac cartridges contain a moderately polar, silica-based bonded phase with weakly basic surface. The sorbent can be used as a polar sorbent with different selectivity for acidic/basic analytes or as a weak anion exchanges in ...