Solarthermie und CO₂: Methanol aus der Wüste

Abstract

Methanol kann aus CO2 auf Basis von Kohle oder letzendlich aus der Luft durch Hydrierung mit Wasserstoff, erzeugt durch Wasserelektrolyse mit aus Solarthermieanlagen gewonnenem Strom in Wüstenregionen, produziert werden. Methanol ist ein geeignetes Speichermedium für Energie, es kann günstig gelagert und transportiert werden. Damit ist es ist ein geeigneter Energierohstoff, Treibstoff für Benzin‐ und Dieselmotoren sowie ein Chemierohstoff, der nahtlos Erdgas und Erdöl ersetzen kann. Die Nutzung einer Methanol‐Technologie könnte für Staaten in Südeuropa und Nordafrika enorme volkswirtschaftliche Bedeutung erlangen.

Power‐to‐Fuels: E‐Fuels as an Important Option for a Climate‐Friendly Mobility of the Future

“…The publication of H. Offermanns et al [16] guides to a similar conclusion. It is to the same extent a European task, for which the European Union is developing and implementing various strategies.…”

Renewable Methanol Synthesis

“…, include co‐precipitation, sol‐gel, citrate method, and impregnation. Co‐precipitation generally yields the best catalysts and makes up 69 % of the published research articles . Catalysts prepared by co‐precipitation methods are generally found to contain smaller crystallite sizes, have higher dispersion of metal particles as well as higher surface areas.…”

“…Even though many catalyst materials with various compositions, active and selective for the synthesis of methanol via the hydrogenation of CO 2 , have been developed since then, the inexpensive Cu/ZnO system prepared by co-precipitation remains unrivalled in performance [79,189] The preparation methods for Cu/ZnO catalysts, surveyed by Á lvarez et al [79], include co-precipitation, sol-gel, citrate method, and impregnation. Co-precipitation [112] generally yields the best catalysts and makes up 69 % of the published research articles [79]. Catalysts prepared by co-precipitation methods are generally found to contain smaller crystallite sizes, have higher dispersion of metal particles as well as higher surface areas.…”

“…A pilot plant operation in 2014 enabled the capture of CO 2 at a capacity of 50 t a −1 . Climeworks increased the capacity in 2017, expecting to collect over 900 t a −1 CO 2 , . The net amount of CO 2 mitigated by catalytic conversion with renewable energy, however, is 20–40 times greater than sequestration from air over a 20‐year span , .…”