Sep-Pak Amino Propyl (NH2) Vac RC 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 ...
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 ...
It was already known that the chemical stability of MIL-125-NH2 is quite limited when exposed to acidic and basic conditions, which restricts activation processes to milder conditions. This often yields suboptimal results or requires MOFs metal doping for stability improvement [23]. This work ...
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 ...
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....
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 ...
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)...
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 a...