Abstract: A fibrous substrate for depositing carbon generated from pyrolysis of a hydrocarbon may include at least one roll defining a plurality of rolled deposition surfaces configured to receive carbon generated from the pyrolysis. The fibrous substrate may further include at least one spacer between and spacing at least one pair of opposed deposition surfaces of the plurality of rolled deposition surfaces. A system for generating hydrogen gas may include a pyrolysis reactor configured to generate the hydrogen gas from a hydrocarbon through pyrolysis. The system may further include the fibrous substrate. A method for forming the fibrous substrate may include positioning the at least one spacer on a surface of a fibrous mat, and rolling the fibrous mat into the at least one roll.

Abstract: A contaminant removal system includes a contaminant desorption system and two or more contaminant sorption systems. The contaminant desorption system includes at least one stripper configured to desorb one or more contaminants from a liquid sorbent. The one or more contaminants include at least carbon dioxide. Each contaminant sorption system includes at least one scrubber and a liquid sorbent circuit. Each scrubber is configured to absorb the one or more contaminants from an air stream into the liquid sorbent. The liquid sorbent circuit is configured to circulate the liquid sorbent between the at least one scrubber and the at least one stripper of the contaminant desorption system.

Abstract: Disclosed are foam articles comprising a thermoplastic, closed-cell foam having at least a first surface and comprising: (i) thermoplastic polymer cell walls comprising at least about 0.5% by weight of ethylene furanoate moieties and optionally one or more co-monomer moieties; and (ii) blowing agent comprising HPC-152a contained in at least a portion of said closed cells.

Abstract: Low-density, thermoplastic foams comprising: (a) thermoplastic polymer cells comprising cell walls comprising polyethylene furanoate, wherein at least about 50% by volume of the cells are closed cells; and (b) at least HFO-1234ze(E) contained in said closed cells.

Abstract: A low-density, thermoplastic foam comprising: (a) thermoplastic polymer cells comprising cell walls forming closed cells, wherein said thermoplastic polymer comprises ethylene furanoate moieties and optionally ethylene terephthalate moieties, wherein said polymer comprises from about 1 mole % to about 100 mole % of ethylene furanoate moieties and optionally at least about 1 mole % ethylene terephthalate moieties; and (b) one or more HFOs having three or four carbon atoms and/or one or more HFCOs having three or four carbon atoms contained in the closed cells.