Oxidative upgrade of furfural to succinic acid using SOH-carbocatalysts with nitrogen functionalities based on polybenzoxazine.

SOH-carbocatalysts with nitrogen functionalities were prepared using the carbonization of polybenzoxazine derived from four different amines (aniline, ethylenediamine, triethylenetetramine, and tetraethylenepentamine) and then sulfonation. The obtained SOH-carbocatalysts underwent catalytic testing for furfural oxidation with HO to produce succinic acid. The effects of nitrogen functionalities were reported for the first time.

Remarkable Activity of Nanoarchitectonics Mesoporous CuO/CeO₂-TiO₂ Prepared by Nanocasting and Deposition Precipitation Techniques.

In this work, a ceria (CeO₂) support was modified with titania (TiO₂) by nanocasting using MCM-48 as a hard template and then loading Cu (as the nitrate salt) at different levels (3-9% by weight) by deposition-precipitation followed by calcination. The addition of TiO₂ in MSP CeO₂ revealed that the MSP CeO₂ was significantly improved the oxygen vacancies of the catalyst by increasing the Ce content from 38 to 75% and stabilizing the Ce species by bonding with the oxygen as Ce(4)-O(2)-Ti(3). Moreover, the bonding of MSP CeO₂ with TiO₂ generated the oxygen defect vacancies (-Ti), allowing Cu to occupy and be reduced to Cu during calcination.

Enhanced CO capturing over ultra-microporous carbon with nitrogen-active species prepared using one-step carbonization of polybenzoxazine for a sustainable environment.

Nitrogen-enriched porous carbon has been a promising material for CO capture in the recent decades. To enhance the performance of CO adsorption, both an N-active site and the textural properties are crucial determinants. Herein, ultra-microporous carbon with N-active species was prepared using two synthesis procedures: 1) one-step carbonization of a polybenzoxazine (PBZ) precursor at 800 °C, and 2) the CO activation process at 900 °C.

Advanced and economical ambient drying method for controlled mesopore polybenzoxazine-based carbon xerogels: Effects of non-ionic and cationic surfactant on porous structure.

Polybenzoxazine has been successfully synthesized by a facile quasi-solventless method and used as a precursor for producing carbon xerogels via an ambient drying method, rather than usually used CO2 critical or freeze drying. In this work, we aim to study the effect of non-ionic (Synperonic NP30) and cationic (CTAB) surfactants on porous structure of polybenzoxazine-based carbon xerogels. Of particular interest is the formation of inter-connected structure of mesoporous carbon xerogels with mesopore diameters in the range of 15-36 nm by using different concentrations of the cationic surfactant.

Production of biobutanol from acid-pretreated corncob using Clostridium beijerinckii TISTR 1461: Process optimization studies.

Corncob is a potential feedstock in Thailand that can be used for fermentable sugar production through dilute sulfuric acid pretreatment and enzymatic hydrolysis. To recover high amounts of monomeric sugars from corncob, the sulfuric pretreatment conditions were optimized by using response surface methodology with three independent variables: sulfuric acid concentration, temperature, and time. The highest response of total sugars, 48.