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Daimler Buses to offer CO2-neutral vehicles in every segment by 2030; eCitaro with Toyota fuel-cell range extender

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Starting in 2023, Daimler Buses will also equip its previously purely battery-electric Mercedes-Benz eCitaro city bus, which has been in series production since 2018, with a hydrogen-based fuel cell as a range extender in both solo and articulated models. The eCitaro Range Extender is still clearly designed for use as a city bus.

Range 435
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Oxford team directly converts CO2 to jet fuel using iron-based catalysts

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The catalyst shows a carbon dioxide conversion through hydrogenation to hydrocarbons in the aviation jet fuel range of 38.2%, with a yield of 17.2%, and a selectivity of 47.8%, and with an attendant low carbon monoxide (5.6%) and methane selectivity (10.4%). In brief, the Fe–Mn–K catalyst shows a CO 2 conversion of 38.2%

Convert 505
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Molten carbonate electrolysis can produce a range of carbon nanomaterials, including graphene, from CO2 at high yield

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Researchers from Huazhong University of Science and Technology in China and George Washington University in the US report in a new paper in the ACS journal Accounts of Chemical Research that a range of important carbon nanomaterials can be produced at high yield by molten carbonate electrolysis.

Carbon 376
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NRL researchers optimizing two-step process for synthesis of jet-fuel-range hydrocarbons from CO2

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Researchers at the US Naval Research Laboratory (NRL) are investigating an optimized two-step process for the synthesis of liquid hydrocarbons in the jet fuel range from CO 2 and hydrogen. CO 2 is 140 times more concentrated in seawater than in air on a weight per volume basis (g/mL), the authors note.

CO2 278
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PNNL team develops new low-cost method to convert captured CO2 to methane

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Though it is a greenhouse gas and requires careful supply chain management, methane has many applications, ranging from household use to industrial processes, said co-author and PNNL chemist Jotheeswari Kothandaraman. 2021), “Integrated Capture and Conversion of CO2 to Methane using a Water-lean, Post-Combustion CO2 Capture Solvent.”

Convert 315
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Audi partnering with Climeworks on CO2 direct air capture and storage

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The technology can also be scaled up to the megaton-per-year range and thus harbors great potential from the future. The direct air capture technology from Climeworks boasts two major advantages: Lifecycle analyses show that 90% of the CO 2 filtered out of the air is effectively and permanently stored underground.

Audi 446
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Project HyTime demonstrates potential for major CO2 savings from hydrogen dual fuel

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Other conclusions from the work were that tail pipe emissions in a number of specific applications such as refuse trucks were significantly better than the EURO 6 base vehicles, with the NO x emissions reduced by between 29-85% across the range of cycles tested.

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