Low carbon hydrogen production in Canada via natural gas pyrolysis

Okeke, Ikenna J.; Saville, Bradley A.; MacLean, Heather L.

doi:10.1016/j.ijhydene.2022.12.169

Cited by 23 publications

(1 citation statement)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a third phase, building on the work of Nikolaidis and Poullikkas, the graphical illustration of the hydrogen production methods was created from scratch by enriching the initial graphical illustration thanks to the work of other researchers (Akubo et al, 2019;Okeke et al, 2023;Osselin et al, 2022;Pocha et al, 2023). Concretely, the authors have added additional hydrogen production routes and have restructured the visual representation, based on the literature review.…”

Section: Methodsmentioning

confidence: 99%

Redefining the Hydrogen “Colours” based on Carbon Dioxide Emissions: A New Evidence-Based Colour Code

Ocenic,

Tanţău

2023

Proceedings of the International Conference on Business Excellence

View full text Add to dashboard Cite

This paper redefines hydrogen colour codes based on carbon dioxide emissions. It highlights that there are several colour codes, which disregard the carbon dioxide emitted in the hydrogen production process (e.g., electrolysis with renewable energy, steam reforming of natural gas, coal gasification, etc.). Some colours are used interchangeably for different technologies, while many colour codes do not assign a colour for all possible production pathways. Therefore, the existent framework is misleading and lacks scientific underpinning of colour labelling (e.g., green, blue, grey, black, yellow, purple, turquoise, etc.). This paper builds upon the work of Nikolaidis and Poullikkas and provides a qualitative assessment of the colour codes used to label various technologies. Based on a comparative analysis of the latest research and analysing hydrogen colour codes, this paper inquires whether there is or not, a common understanding of the hydrogen production pathways that lie behind each hydrogen “colour”. This paper finds that there are major inconsistencies regarding the colours used, especially for technologies using fossil fuels as an energy source, but nuclear energy has also been found to have discrepancies in labelling. At the same time, there is only one colour used to describe a wide range of technologies using renewable energy (i.e., green). However, if carbon dioxide emissions of the corresponding production technology were visually represented using a predefined colour-code, the hydrogen produced with fossil fuels would have a less diverse colour range, than current colour palettes would suggest. Rather than being “grey” and “blue”, coal, oil and gasbased hydrogen appear to be different shades of “brown” and “black”. This finding illustrates that these technologies emit more carbon dioxide emissions than an initial labelling would suggest, which raises the question whether any colours of hydrogen, other than its “green” versions, is compliant with the objectives of the Paris Agreement.

show abstract

Section: Methodsmentioning

confidence: 99%