{"id":7779,"date":"2020-10-14T06:44:16","date_gmt":"2020-10-14T06:44:16","guid":{"rendered":"http:\/\/blogs.bath.ac.uk\/edswahs\/?p=7779"},"modified":"2020-10-14T06:44:16","modified_gmt":"2020-10-14T06:44:16","slug":"are-you-pro-blue-or-pro-green","status":"publish","type":"post","link":"https:\/\/blogs.bath.ac.uk\/edswahs\/2020\/10\/14\/are-you-pro-blue-or-pro-green\/","title":{"rendered":"Are you pro-blue or pro-green?"},"content":{"rendered":"

This is not an impertinent enquiry into your politics, but a question about your stance on the pros and cons of the putative hydrogen economy. \u00a0Do you want blue hydrogen or green hydrogen, or maybe no hydrogen at all?<\/p>\n

Green Hydrogen<\/strong><\/em> is hydrogen that not only meets the low-carbon threshold but is generated using renewable energy sources such as solar or wind.<\/p>\n

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Blue Hydrogen<\/strong><\/em> is hydrogen that meets the low-carbon threshold but is generated using non-renewable energy sources.<\/p>\n<\/div>\n<\/div>\n

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Grey Hydrogen<\/strong><\/em>\u00a0meanwhile is hydrogen produced using fossil fuels such as natural gas. \u00a0 Currently, this accounts for roughly 95% of the hydrogen produced today.<\/p>\n<\/div>\n<\/div>\n

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The trouble with hydrogen (one of many perhaps) is that because it's not naturally occurring, it's not a renewable energy source (like wind, solar or geothermal). \u00a0It's merely a store of energy \u2013 just as petrol, a flywheel, or a battery is. \u00a0That is, it has to be produced in an industrial process before it's used. \u00a0Even green hydrogen has to be generated by electrolysis from, say, sea water. \u00a0And if such hydrogen is then passed through a fuel cell to generate electricity to power a car, then the whole process is very inefficient.<\/div>\n
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There are arcane methods of generating hydrogen from natural gas which result in just the gas and solid carbon: \u00a0 CH4 => 2H2 + C \u00a0which is a magical sounding process but it works either by proton conduction in a solid catalyst or catalysis through a liquid metal. \u00a0See this<\/a>. \u00a0Magical, but green?<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

This is not an impertinent enquiry into your politics, but a question about your stance on the pros and cons of the putative hydrogen economy. \u00a0Do you want blue hydrogen or green hydrogen, or maybe no hydrogen at all? Green...<\/p>\n","protected":false},"author":237,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[2,4],"tags":[],"class_list":["post-7779","post","type-post","status-publish","format-standard","hentry","category-comment","category-news-and-updates"],"acf":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/blogs.bath.ac.uk\/edswahs\/wp-json\/wp\/v2\/posts\/7779","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.bath.ac.uk\/edswahs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.bath.ac.uk\/edswahs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.bath.ac.uk\/edswahs\/wp-json\/wp\/v2\/users\/237"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.bath.ac.uk\/edswahs\/wp-json\/wp\/v2\/comments?post=7779"}],"version-history":[{"count":0,"href":"https:\/\/blogs.bath.ac.uk\/edswahs\/wp-json\/wp\/v2\/posts\/7779\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.bath.ac.uk\/edswahs\/wp-json\/wp\/v2\/media?parent=7779"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.bath.ac.uk\/edswahs\/wp-json\/wp\/v2\/categories?post=7779"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.bath.ac.uk\/edswahs\/wp-json\/wp\/v2\/tags?post=7779"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}