{"id":12,"date":"2026-10-02T11:49:50","date_gmt":"2026-10-02T10:49:50","guid":{"rendered":"https:\/\/mapdow.com\/?p=12"},"modified":"2026-10-02T11:49:50","modified_gmt":"2026-10-02T10:49:50","slug":"adipic-acid-process-n%e2%82%82o-byproduct-management","status":"publish","type":"post","link":"https:\/\/mapdow.com\/?p=12","title":{"rendered":"Adipic Acid Process: N\u2082O Byproduct Management"},"content":{"rendered":"

The production of adipic acid (a precursor for nylon-6,6) via nitric acid oxidation of cyclohexane\/cyclohexanol generates significant quantities of N\u2082O as a byproduct. This single industrial process historically contributed approximately 5\u20138% of global anthropogenic N\u2082O emissions.<\/p>\n

The Reaction<\/h2>\n

In adipic acid synthesis, cyclohexanol and cyclohexanone (“KA oil”) are oxidized with nitric acid at 60\u201380\u00b0C in the presence of copper and vanadium catalysts. The reaction sequence produces N\u2082O as an undesirable byproduct alongside the target adipic acid.<\/p>\n

\n
N\u2082O Generation Rate<\/div>\n
~0.28 t N\u2082O per t adipic acid<\/div>\n<\/div>\n

Abatement Technologies<\/h2>\n

Since the late 1990s, major adipic acid producers have implemented thermal decomposition and catalytic reduction systems that destroy over 98% of generated N\u2082O. BASF, Invista, and Radici Group have all deployed high-temperature (850\u20131000\u00b0C) thermal oxidation units with secondary heat recovery.<\/p>\n","protected":false},"excerpt":{"rendered":"

The production of adipic acid (a precursor for nylon-6,6) via nitric acid oxidation of cyclohexane\/cyclohexanol generates significant quantities of N\u2082O as a byproduct. This single\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-12","post","type-post","status-publish","format-standard","hentry","category-production"],"_links":{"self":[{"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/posts\/12","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mapdow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12"}],"version-history":[{"count":0,"href":"https:\/\/mapdow.com\/index.php?rest_route=\/wp\/v2\/posts\/12\/revisions"}],"wp:attachment":[{"href":"https:\/\/mapdow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mapdow.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mapdow.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}