Methods or preparing para-xylene from biomass by carrying out a Diels-Alder cycloaddition at controlled temperatures and activity ratios. Methods of preparing bio-terephthalic acid and bio-poly(ethylene terephthalate (bio-PET) are also disclosed, as well as products formed from bio-PET.

Process for dehydrogenation of alkanesor alkylbenzenes by using metal sulfide catalyst under the presence of small amounts of hydrogen sulfide.

Process for dehydrogenation of alkanesor alkylbenzenes by using metal sulfide catalyst under the presence of small amounts of hydrogen sulfide.

Process for dehydrogenation of alkanesor alkylbenzenes by using metal sulfide catalyst under the presence of small amounts of hydrogen sulfide.

The disclosure concerns a process to perform a reaction of alkane transformation into olefins, said process comprising the steps of (a) providing a stream of light alkane-comprising feedstock with one or more alkanes and one or more oxidants selected from CO.sub.2 and/or COS; and providing at least one fluidized bed reactor comprising at least two electrodes and a bed comprising particles; (b) putting the particles of the bed in a fluidized state to obtain a fluidized bed; and (c) heating the fluidized bed to a temperature ranging from 600? C. to 1500? C. to conduct the reaction; the process is remarkable in that the step c) is performed by passing an electric current through the fluidized bed; the particles of the bed comprise electrically conductive particles, and in that, at least 10 wt. % of the particles are electrically conductive particles and have a resistivity ranging from 0.001 to 500 Ohm.Math.cm at 800? C.

The disclosure concerns a process to perform a reaction of alkane transformation into olefins, said process comprising the steps of (a) providing a stream of light alkane-comprising feedstock with one or more alkanes and one or more oxidants selected from CO.sub.2 and/or COS; and providing at least one fluidized bed reactor comprising at least two electrodes and a bed comprising particles; (b) putting the particles of the bed in a fluidized state to obtain a fluidized bed; and (c) heating the fluidized bed to a temperature ranging from 600? C. to 1500? C. to conduct the reaction; the process is remarkable in that the step c) is performed by passing an electric current through the fluidized bed; the particles of the bed comprise electrically conductive particles, and in that, at least 10 wt. % of the particles are electrically conductive particles and have a resistivity ranging from 0.001 to 500 Ohm.Math.cm at 800? C.

The disclosure concerns a process to perform a reaction of alkane transformation into olefins, said process comprising the steps of (a) providing a stream of light alkane-comprising feedstock with one or more alkanes and one or more oxidants selected from CO.sub.2 and/or COS; and providing at least one fluidized bed reactor comprising at least two electrodes and a bed comprising particles; (b) putting the particles of the bed in a fluidized state to obtain a fluidized bed; and (c) heating the fluidized bed to a temperature ranging from 600 C. to 1500 C. to conduct the reaction; the process is remarkable in that the step c) is performed by passing an electric current through the fluidized bed; the particles of the bed comprise electrically conductive particles, and in that, at least 10 wt. % of the particles are electrically conductive particles and have a resistivity ranging from 0.001 to 500 Ohm.Math.cm at 800 C.

The disclosure concerns a process to perform a reaction of alkane transformation into olefins, said process comprising the steps of (a) providing a stream of light alkane-comprising feedstock with one or more alkanes and one or more oxidants selected from CO.sub.2 and/or COS; and providing at least one fluidized bed reactor comprising at least two electrodes and a bed comprising particles; (b) putting the particles of the bed in a fluidized state to obtain a fluidized bed; and (c) heating the fluidized bed to a temperature ranging from 600 C. to 1500 C. to conduct the reaction; the process is remarkable in that the step c) is performed by passing an electric current through the fluidized bed; the particles of the bed comprise electrically conductive particles, and in that, at least 10 wt. % of the particles are electrically conductive particles and have a resistivity ranging from 0.001 to 500 Ohm.Math.cm at 800 C.