To estimate the Lewis basicity
of the promoted and un-promoted catalysts, temperature programmed (TPD) experiments were conducted by using CO2 as an adsorption gas.
Acidity/ Probes (kJ/mol) [epsilon] basicity
Hx 0 1.
Increase in natural basicity
of surface of rich with montmorillonite samples or formation of additional basic sites (O- atoms) by high activation temperature of catalysts were the reasons of growth of MBOH conversion.
From table 2, Adding fluoride (F) to PS will decrees PA (Proton Affinity) following the order m less than p less than o , chloride (Cl) ) will decrees PA following the order m less than o less than p , methyl (CH3) will increase PA following the order o less than m less than p , adding groups as (O-O-Phenyl) will increase PS basicity
, (O-CH3-O-Phenyl) will decrease PS basicity
and adding groups as (O-(C=O)-O-Phenyl) will decrease PA but less than (O-O-Phenyl) do.
For the basicity
and acid neutralization capacity measurements, the set sample was ground by a mortar and pestle, and 0.
The presence of surface basicity
(Table 5) suggests that fresh biochars will also have some capacity to retain anions in soil; however, the surface basicity
may decrease and eventually disappear with progressive oxidation of biochar (Cheng et al.
Evaluation of the basicity
of the slag melt is essential for determining the possibilities of interaction of the component of the slag with each other and, most importantly, with the components of the contacting phases (metallic and gas).
from unsubstituted and n-alkyl HALS can interact with acidic components of a formulation or metal catalysts present to initiate crosslinking reactions.
One can differentiate the substituent polar or steric properties or the solvent polarity, polarizability, as well as the hydrogen bonding acidity and basicity
, responsible for the existence of the specific solvation of the solutes.
A volatile alkali, such as ammonium hydroxide, is added to perms which dissipates during the process to reduce the basicity
of the solution.
Similar molecules and ions could have potential applications in areas such as catalysis and the fabrication of magnetic switches; in addition, they are expected to exhibit interesting gas-phase acidity and/or basicity
This ratio, which is the ratio of basic oxide to an acidic oxide, determines the basicity
of the glass and because the reaction between glass and liquid is an acid base one, an increase in the basicity
of the glass will increase the rate of the setting reaction.