Abstract: A dual function material is provided that captures carbon dioxide from ambient air, i.e., direct air capture, and converts the CO2 to a desired product such as methane. The material includes a high surface area carrier such as Al2O3 upon which catalysts and alkaline adsorbents are positioned proximate each other. In the presence of reactive gas such as hydrogen, the catalysts reduce the adjacent adsorbents to generate additional active sites and enhance the amount of CO2 captured by the material. Once the material becomes saturated with CO2, hydrogen is reintroduced to reduce the catalyst, such as ruthenium, at which time the adsorbed CO2 can migrate from the adsorbent to the catalyst for catalytic conversion to methane. The materials can be employed in isothermal, cyclic reactor systems where target species are bound and then desorbed to reactivate the material, e.g., bind more target species for desorption and/or conversion to additional product.

Abstract: The present disclosure relates to a composition that includes a compound having the structure R1O—(CH2O)n—R2 and a cetane number between about 65 and about 100, where n is between 1 and 10, inclusively, R1 includes a first alkyl group, and R2 includes a second alkyl group.

Abstract: The present disclosure relates to a composition that includes a compound having the structure R1O—(CH2O)n—R2 and a cetane number between about 65 and about 100, where n is between 1 and 10, inclusively, R1 includes a first alkyl group, and R2 includes a second alkyl group.