The phrase "acidity strengths" is correct and usable in written English.
It can be used in contexts related to chemistry, food science, or any discussion involving the measurement of acidity levels.
Example: "The acidity strengths of various fruits can significantly affect their flavor profiles."
Alternatives: "levels of acidity" or "acidity levels".
Studies indicate that the distribution of products obtained by zeolitic methanol conversion strongly depends on the acidity (acid strength and number of acid sites) and channel structure of zeolite [1].
The Hammett acidity function (H0) can effectively express the acidity strength of an acid in organic solvents.
Ionic additives principally affected the intermediate acidity strength (NH3 desorption temperature range 473 673 K), which varied from 1.1 (Mg2+) to 3.2 (SO42−) μmol.m−2.
Brønsted acidity is a key factor controlling catalytic performance of zeolites in many technological processes, and hence the need to find a reliable means for measuring acidity strength.
The introduction of phosphoric groups, with higher acidity strength, improved the selectivity to h-GTBE, and glycerol triether was detected in low amounts.
The thermodynamic stability and the expected acidity strength of Lewis/Brønsted superacids (considered here as consisting of superhalogen anions and the additional protons) are examined for the systems containing selected alkali metals, alkali earth metals, metalloids and non-metals.
Comparing the kinetic models of deactivation for two catalysts with different acidity strength distributions, the need for a kinetic model of selective deactivation is attributed to the heterogeneous nature of the acidic structure of the catalyst.
Both NbMCM-36 zeolites exhibited different content of micropores (lower in the zeolites synthesized from MCM-22), different loading with niobium species (higher in the material prepared from MCM-56) and similar acidity strength.
The silica alumina catalyst has a considerable heterogeneity in the acidity strength of its active sites; so, an activity has been associated with the strongly acidic sites, which take part in the isomerization of cis-butene to trans-butene and which are deactivated rapidly.
The results obtained are listed in Table 4, which shows the acidity strength of TiO2-Pr-SO3H.
