No matter how many lies the fossil fuel industry puts out, no matter how many slick videos they push here and elsewhere, in China, hydrogen is overwhelmingly made from coal and other fossil fuels with exergy destruction.
Subsidizing Grid-Based Electrolytic Hydrogen Will Increase Greenhouse Gas Emissions in Coal Dominated Power Systems Liqun Peng, Yang Guo, Shangwei Liu, Gang He, and Denise L. Mauzerall
Environmental Science & Technology 2024 58 (12), 5187-5195
The text is clear enough.
From the introductory text:
... Currently, nearly all hydrogen in China is either produced directly from fossil fuels (55% from coal gasification and 14% from steam methane reforming (SMR)) or as a byproduct of petroleum refining (28%), with only 1% coming from water electrolysis. (2) Producing 1 kg of coal- or SMR-based hydrogen emits roughly 19 and 10 kg of CO2, respectively. (3) In 2020, hydrogen production from fossil fuels in China emitted approximately 322Tg of CO2, equivalent to 25% of total CO2 emissions from industrial processes, a number expected to rise with increasing hydrogen demand. (4) Industrial processes include production of nonmetallic mineral products, chemical, and metal products, as well as production and consumption of halocarbons and sulfur hexafluoride. (4)
.
The bold, italics and underlining is mine.
EST: Chinese Hydrogen Production Is Making Climate Change Worse.
It is also exceedingly stupid and frankly ignorant, to claim that a lab scale still low efficiency direct visible light to hydrogen scheme has anything to do with industrial practice. There are hundreds of "light to hydrogen" papers published each year, and yet after decades the main source of hydrogen is fossil fuels. The second largest
use for hydrogen after ammonia manufacture is for petroleum refining.
Basically pushing hydrogen is an expression not only of contempt for science; it is a contempt for the environment as well.
= new reply since forum marked as read