Ukuhlaziywa kwe-in-situ kwemikhiqizo engazinzile kanye nokuqapha kwe-spectral okuku-inthanethi kube ukuphela kwezindlela zocwaningo
Ekuphenduleni okuthile kwe-nitration, ama-asidi aqinile afana ne-nitric acid adinga ukusetshenziswa ukwenza izinto ezingavuthiwe ze-nitrate ukukhiqiza imikhiqizo ye-nitrate.Umkhiqizo we-nitration walokhu kusabela awuzinzile futhi ubola kalula.Ukuze uthole umkhiqizo oqondiwe, konke ukusabela kudinga ukwenziwa endaweni engu -60°C.Uma amasu aselabhorethri angaxhunyiwe ku-inthanethi njenge-chromatography, i-mass spectrometry, ne-nuclear magnetic resonance isetshenziswa ukuze kuhlaziywe umkhiqizo, umkhiqizo ungase ubole phakathi nenqubo yokuhlaziya futhi ulwazi olunembile mayelana nokusabela alukwazi ukutholwa.Kusetshenziswa ubuchwepheshe be-inthanethi be-spectroscopy bokuqapha ngesikhathi sangempela, ukuhluka kokuqukethwe komkhiqizo kanye nenqubekelaphambili yokusabela kusobala lapho uthi nhla.Ocwaningweni lokusabela okunjalo okuqukethe izingxenye ezingazinzile, ubuchwepheshe bokuqapha ku-inthanethi cishe buwukuphela kwendlela yocwaningo esebenzayo.
Isithombe esingenhla sirekhoda ukuqapha kwesikhathi sangempela ku-inthanethi kokusabela kwe-nitrification.Iziqongo zesici zomkhiqizo ezikhundleni ezingama-954 no-1076 cm-1bonisa inqubo ecacile yokuthuthukisa nokunciphisa ngokuhamba kwesikhathi, okubonisa ukuthi isikhathi eside kakhulu sokusabela sizoholela ekuboleni kwemikhiqizo ye-nitrate.Ngakolunye uhlangothi, indawo ephakeme kakhulu yesici esiphezulu ibonisa okuqukethwe komkhiqizo ohlelweni.Kusuka kudatha yokuqapha eku-inthanethi, kungabonwa ukuthi okuqukethwe komkhiqizo kuphakeme kakhulu lapho ukusabela kufinyelela emaminithini angu-40, okuphakamisa ukuthi imizuzu engu-40 yindawo yokugcina yokusabela elungile.
Isikhathi sokuthumela: Jan-10-2024