Difurfurylidene trehalose (DFTreh) was synthesized from trehalose and furfural by an acetalization reaction. Maleimide-terminated dimethylsiloxane oligomers (DMS-BMI) were synthesized from amine-terminated dimethylsiloxane oligomers by condensation with maleic anhydride. Three types of DMS-BMI with different length were prepared. Trehalose-based polymers were synthesized by Diels-Alder reaction...

In this paper, the endothermic methanol decomposition reaction is used to obtain syngas by transforming middle and low temperature solar energy into chemical energy. A two-dimensional multiphysics coupling model of a middle and low temperature of 150~300 ◦C solar receiver/reactor was developed, which couples momentum equation in porous catalyst bed, the governing mass conservation with chemical...

Quantum chemical calculations using density functional theory at the B3LYP level of theory were carried out to investigate the reaction pathways for the addition of ethylene to WO(CH3)2(CH2) (W1). The results are compared to those of previous theoretical studies of the ethylene addition to OsO3(CH2) (Os1) and ReO2(CH3)(CH2) (Re1). The theoretically predicted reactions pathways exhibit significa...

The direct dehydrogenation of butane (BDH) is emerging as an attractive on-purpose technology for the production 1,3-butadine. However, its product yield hindered by high rate carbon deposition associated to temperature required highly endothermic reaction. In this work, we evaluated use H2-selective membrane reactor, increase process at milder operating conditions. novel proposed reactor (MR)-...

In previous papers we have demonstrated how the direct simulation Monte Carlo method can be used to simulate detonations. Those simulations were limited to exothermic reactions. In this paper exothermic and endothermic reactions are simulated. Under these circumstances, one obtains pathological detonations. That is, these simulations cannot be predicted using the well-known Chapman-Jouguet hypo...

Abstract In this study, a synthetic BaSO 4 ·CaSO composite was prepared by co-precipitation technique, characterised and examined for REE sorption. The sorption parameters were; pH = 4, equilibrium time 20 min, temperature 303 K, liquor volume to mass ratio of 0.2:1 L g ?1 . reaction controlled pseudo 2nd order kinetic mechanism Langmuir adsorption isotherm with an capacity 168.63 mg 90.14% (II...

Abstract The removal of reactive blue 49 dye on a bio-sorbent material for Natural lemon peels(NLP) and Acid-activated carbon peels(AACLP) from aqueous solutions was studied. Preparation activated by Calcinations at temperature (300°C) one hour chemical activation phosphoric acid. Study different parameter such as effect contact time, adsorbent dose, pH solution, solution Adsorption comparison ...