{"id":38322,"date":"2024-03-26T16:42:38","date_gmt":"2024-03-26T16:42:38","guid":{"rendered":"https:\/\/www.alicat.com\/?post_type=article&p=38322"},"modified":"2026-01-26T16:57:59","modified_gmt":"2026-01-26T16:57:59","slug":"beschreibung-stromungsregelung-einer-novel-grunen-ammoniak-produktionsmethode-umwelt-und-luft-monitoring-literatur","status":"publish","type":"support","link":"https:\/\/www.alicat.com\/de\/support\/describing-flow-regulation-of-a-novel-green-ammonia-production-method\/","title":{"rendered":"Durchflussregelung in der gr\u00fcnen Ammoniakproduktion"},"content":{"rendered":"\n[et_pb_section fb_built=”1″ _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Flow regulation in green ammonia production” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.27.4″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]

Ammonia and the Haber-Bosch process<\/span><\/b>\u00a0<\/span><\/h2>\nIn the 20<\/span>th<\/span>\u00a0century, ammonia (NH3<\/sub><\/span>) was used primarily for fertilizer development. In the 21st century, ammonia is finding new use as a\u00a0hydrogen energy carrier<\/a>\u00a0because hydrogen can easily be converted to and from ammonia. Because ammonia requires less pressure to liquefy and is easier to move or store than hydrogen within existing infrastructure, as\u00a0hydrogen is prone to leakage<\/a>, ammonia is a potential solution for hydrogen transportation.\u00a0<\/span>\u00a0<\/span>\n\nThe\u00a0Haber-Bosch<\/a>\u00a0process to produce ammonia invented at the beginning of the 20<\/span>th<\/span>\u00a0century brought about the green revolution within agriculture, allowing for the manufacturing of nitrogen fertilizers in bulk to exponentially increase the food supply for humans and animals. However, the Haber-Bosch process is also extremely energy intensive, requiring high pressure and temperature.<\/span> Globally, the Haber-Bosch process produces more than 1% of all carbon dioxide emissions, classifying it as a major contributor to global climate change.<\/span>\u00a0<\/span>\n

Replacing Haber-Bosch<\/span><\/b>\u00a0<\/span><\/h2>\nAs global fertilizer and hydrogen use will rise rapidly as global population and energy demand grows, the expected demand for ammonia will also increase. Due to this expanding interest in ammonia, researchers have developed new methods to produce ammonia more affordably than using the Haber-Bosch process.\u00a0<\/span>\u00a0<\/span>\n\nOne such method developed by\u00a0UC Berkeley<\/a>\u00a0chemists uses metal-organic frameworks, or MOFs, that are able to adsorb and release ammonia at temperatures around 175 \u00b0C. As these MOFs don\u2019t bond to any of the reactants, the capture and release of ammonia can be accomplished with smaller temperature swings to save energy.\u00a0<\/span>\u00a0<\/span>\n\nAnother method recently developed by the Korea Institute of Machinery and Materials (KIMM<\/a>) requires even less energy to produce ammonia by using a plasma catalyst-integrated system that reacts with H2<\/sub><\/span>O and N2<\/sub><\/span>\u00a0at atmospheric pressure. In this process, nitrogen plasma splits water that reacts with the nitrogen to create NOx and H2<\/sub><\/span>. In the presence of a catalyst heated to 100-110 \u00b0C, these intermediaries turn into roughly 85% ammonia at a 95% selectivity.\u00a0<\/span>\u00a0Since the energy required is low enough to be powered by renewable sources such as solar or wind energy, this process can be classified as a \u201cgreen\u201d ammonia production method.<\/span>\n

KIMM\u2019s green ammonia production method<\/span><\/b>\u00a0<\/span><\/h2>\nIn the KIMM method, plasma is first generated from nitrogen gas at a flow rate of 20 L\/min and then sent into a chamber. Simultaneously, water flows into the nitrogen discharge region of the chamber as a water film at a rate of 50 mL\/min. The water film is split by the nitrogen plasma into H2<\/sub><\/span>\u00a0and NO. After this, NO is reduced via H2<\/sub><\/span>\u00a0to ammonia via noble-metal catalysts heated between 100\u2212110 \u00b0C (Pd\/\u03b3-Al2<\/sub><\/span>O3<\/span>\u00a0catalysts on a ceramic monolith connected to the plasma chamber).\u00a0<\/span>\u00a0<\/span>\n\nImplementing gas and liquid mass flow controllers allows for more repeatable, precise, accurate flow control and automation of the nitrogen plasma, water, and heated catalyst within the chamber.\u00a0<\/span>\u00a0<\/span>\n

Gas flow regulation<\/h3>\nFor gas flow regulation, Alicat\u2019s\u00a0MC-Series<\/a>\u00a0provides nitrogen and catalyst gas flow (before plasma generation or catalysts heating) with useful specs and features such as:<\/span>\u00a0<\/span>\n