Exact(10)
Efficacy was also independent of acidity, because variable activity was shown with straight carbon acids of equivalent acidic function (pKa; supplementary material Table S2), although the acid head group is likely to be necessary because related alcohol and aldehyde compounds are non-active.
The net loss of glutamic acid and a preferential exchange with 85 aspartic acid residues preserves the acidic function at reduced flexibility of the side chain.
Metals from group VIII, such as platinum and nickel, are commonly loaded onto the zeolites used in commercial refining processes as bifunctional catalysts, having both a hydrogenation/dehydrogenation function provided by the metal and an acidic function provided by the zeolite acid sites [28, 29].
Most of the conventional hydrocracking catalysts are dual functional catalysts which possess a hydrogenation dehydrogenation function as well as an acidic function [1, 2].
Predictions for the acidic function of DONA compare well with PFOA's, with a pKa of 0.8 1.5 and a E0 of 2.07 2.15 V.
Graphene oxide (GO) grafted with –SO3H group giving a Brønsted acidic function was successfully applied for selective conversion of xylan to furfural (FA), which can be utilized as a platform chemical for a variety of value-added derivatives.
Similar(50)
In tepid water, the first step was reduced to 2 days during which carbonates, acidic functions, and proteins were detected.
NaOH titrations showed ∼3-fold increase in surface acidic functions (∼27 to 76 μmol/g) occurring after 10 min of oxidation.
Our results indicated that all analysed EAAT ligands share the same orientation of the acidic functions and the protonatable nitrogen, even though the distance between the carboxylic carbons varies from 3.7 to 4.9 Å.
Therefore, the NiMo-S/BZ(10) catalyst, where the metallic and acidic functions and structural properties of the zeolite are well balanced, show promise as an HYC catalyst for the hydroconversion of PAHs into high-value BTX mixtures.
The balance of the metallic and acidic functions was modified by variation of the Ni content, and gradually shifted the product distribution showing a close relationship between the SRO performance and Ni content.
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