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sapinker's profile
Steven Pinker
Steven Pinker
Steven Pinker
Verified account
@sapinker

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Steven PinkerVerified account

@sapinker

Cognitive scientist at Harvard.

Boston, MA
pinker.wjh.harvard.edu
Joined January 2010

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    Steven Pinker‏Verified account @sapinker Aug 18

    There's no C in NH3: Ammonia can be "liquid sunshine," a practical carbon-free liquid fuel (one of a number of technologies in the pipeline to achieve decarbonization).http://science.sciencemag.org/content/361/6398/120 …

    7:39 AM - 18 Aug 2018
    • 39 Retweets
    • 109 Likes
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    5 replies 39 retweets 109 likes
      1. New conversation
      2. Thomas James‏ @vonLichtenfeld Aug 18
        Replying to @sapinker

        By-product of combustion is N2O..arguably 300times worse than CO2 as a greenhouse gas. Am I missing a step here?

        4 replies 0 retweets 0 likes
      3. Energy Vanguard‏ @EnergyVanguard Aug 18
        Replying to @vonLichtenfeld @sapinker

        If you read the article, you'll see they're working on a "reactor [that] will 'crack' ammonia into its two constituents: H2, to be gathered up for sale, and N2, to waft back into the air."

        1 reply 0 retweets 1 like
      4. Thomas James‏ @vonLichtenfeld Aug 18
        Replying to @EnergyVanguard @sapinker

        Would have loved to read it but the paywall seemed a bit excessive. That does sound like a good idea, though I would love to check out the %conversion rate and how much unwanted product occurs.

        4 replies 0 retweets 0 likes
      5. Energy Vanguard‏ @EnergyVanguard Aug 18
        Replying to @vonLichtenfeld @sapinker

        It's still early in the development phase now but those are good questions.

        0 replies 0 retweets 1 like
      6. End of conversation
      1. New conversation
      2. barry goldman‏ @barrygoldman1 Aug 18
        Replying to @sapinker

        but will some of it burn to NO compounds? not so great?

        1 reply 0 retweets 1 like
      3. 1 more reply
      1. New conversation
      2. Dino Rosati‏ @dino_rosati Aug 19
        Replying to @sapinker

        Reality check. The device described by the authors converts N2 and H2O to ammonia using electricity at ambient conditions with 60% efficiency but very low (impractically low) yields. 3x better yields at 30% efficiency. This is not very scalable.

        1 reply 0 retweets 1 like
      3. Dino Rosati‏ @dino_rosati Aug 19
        Replying to @dino_rosati @sapinker

        “Liquid Nuclear” is a much better approach. Use nuclear heat/electricity to split water for H2 and Haber-Bosch to make ammonia from H2 and N2. Both processes have been highly optimized. Ammonia synthesis is currently done on a massive scale with high efficiency.

        1 reply 0 retweets 0 likes
      4. Dino Rosati‏ @dino_rosati Aug 19
        Replying to @dino_rosati @sapinker

        Ammonia upgraded to hydrazine H2N2 and mixed with 5-10% water makes a fuel with an energy density closer to gasoline. The water stabilizes the hydrazine and adds to combustion pressure when burned. Quite a practical zero carbon fuel.

        0 replies 0 retweets 0 likes
      5. End of conversation
      1. Martin Herald‏ @H63Martin Aug 20
        Replying to @sapinker

        To clarify: I like many average people, can't see how this is a viable energy alternative. Someone posting a link, to a site, where you have to pay, to read the proofs of their argument, is no argument at all to me.

        0 replies 0 retweets 0 likes
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