Qhov sib txawv tseem ceeb ntawm hydrogenation thiab txo qis yog tias hydrogenation yuav tsum muaj cov khoom siv hluav taws xob thaum txo qis tsis tas yuav muaj cov catalyst tshwj tsis yog nws yog hydrogenation. Hydrogenation yog ib daim ntawv ntawm kev txo cov tshuaj tiv thaiv uas molecular hydrogen ua ke nrog cov molecule uas twb muaj lawm. Yog li ntawd, hydrogenation thiab kev txo qis cuam tshuam ib leeg.
Ib qho kev txo qis tuaj yeem txo qis ntawm oxidation tus lej, poob ntawm oxygen lossis ntxiv hydrogen. Tab sis qee qhov kev txo qis tsis cuam tshuam nrog oxygen lossis hydrogen li reactants. Yog li ntawd, feem ntau lees txais cov ntsiab lus ntawm kev txo qis yog txo qis ntawm oxidation naj npawb. Ntxiv rau qhov sib txawv ntawm qhov tseem ceeb saum toj no, muaj qee qhov sib txawv ntawm ob qho tshuaj tiv thaiv no xws li cov khoom siv tshuaj tiv thaiv; Cov molecules uas muaj ob lossis peb daim ntawv cog lus tuaj yeem nkag mus rau hydrogenation thaum twg cov molecule muaj atoms nrog cov lej oxidation ntau dua tuaj yeem raug txo qis.
Y Hydrogenation yog dab tsi?
Hydrogenation yog tshuaj lom neeg cov tshuaj tiv thaiv uas suav nrog ntxiv ntawm molecular hydrogen rau ib hom tshuaj. Tsis tas li ntawd, qhov tshuaj tiv thaiv no feem ntau tshwm sim nyob rau hauv lub xub ntiag ntawm ib tug catalyst; npib tsib xee, palladium, platinum los yog lawv cov oxides. Nws yog pab tau los txo los yog saturate ib tug tshuaj compound. Hydrogenation tuaj yeem cuam tshuam rau molecule hauv ob txoj kev;
- Saturation ntawm ib qho compound uas muaj ob lossis peb daim ntawv cog lus
- Kev tsis sib haum xeeb ntawm cov molecule
Yuav luag tag nrho cov tebchaw unsaturated muaj peev xwm ntawm reacting nrog molecular hydrogen.
Daim duab 01: Hydrogenation ntawm Alkenes muab Alkanes
Cov tshuaj tiv thaiv tshuaj no muaj txiaj ntsig zoo rau ntau lub hom phiaj kev lag luam rau kev sib txuas ntawm cov tebchaw sib txawv xws li hydrogenation yog qhov tseem ceeb hauv kev lag luam roj av rau kev tsim cov petrochemicals sib txawv.
Kev txo qis yog dab tsi?
Kev txo qis yog qhov txo qis ntawm oxidation naj npawb ntawm cov tshuaj lom neeg. Cov tshuaj tiv thaiv no yog ib nrab ntawm cov tshuaj tiv thaiv redox (ib qho tshuaj tiv thaiv redox muaj ob yam tshuaj lom neeg uas tshwm sim rau ib leeg; oxidation thiab txo qis). Cov tshuaj tiv thaiv txo qis txo tus lej oxidation thaum cov tshuaj tiv thaiv oxidation nce tus lej oxidation.
Daim duab 02: Txo Chelidonic Acid
Qee zaum, kev txo qis yog tshem tawm cov pa oxygen lossis ntxiv cov hydrogen rau ib hom tshuaj. Ntxiv mus, hom tshuaj tiv thaiv no tshwm sim nyob rau hauv peb txoj kev loj; txo tus lej oxidation los ntawm tus nqi zoo mus rau qhov tsis zoo, los ntawm xoom mus rau qhov tsis zoo lossis los ntawm qhov tsis zoo mus rau qhov tsis zoo ntxiv. Ib qho piv txwv zoo rau kev txo cov tshuaj tiv thaiv yog qhov txo qis ntawm oxidation tooj ntawm tooj liab (II) rau tooj liab (0).
Qhov txawv ntawm Hydrogenation thiab txo qis yog dab tsi?
Hydrogenation yog tshuaj lom neeg cov tshuaj tiv thaiv uas suav nrog ntxiv ntawm molecular hydrogen rau ib hom tshuaj. Kev txo qis yog qhov txo qis ntawm oxidation naj npawb ntawm cov tshuaj lom neeg. Hydrogenation thiab txo cov tshuaj tiv thaiv cuam tshuam rau ib leeg vim hydrogenation yog ib qho kev txo qis.
Txawm li cas los xij, muaj qee qhov sib txawv ntawm ob txoj kev tshuaj lom neeg raws li muab hauv qab no. Piv txwv li, hydrogenation qhov tseem ceeb yuav tsum muaj lub catalyst rau qhov kev loj hlob ntawm cov tshuaj tiv thaiv thaum txo qis tsis tas yuav tsum muaj cov catalyst tshwj tsis yog tias nws yog hydrogenation. Thiab tseem, hydrogenation tshwm sim nrog unsaturated molecules thaum txo qis tshwm sim nrog txhua hom tshuaj muaj oxidation ntau dua.
Summary – Hydrogenation vs Reduction
Hydrogenation thiab txo qis yog cov tshuaj tiv thaiv tseem ceeb uas muaj ntau yam kev siv hauv kev lag luam. Hydrogenation yog ib hom kev txo qis. Qhov sib txawv ntawm hydrogenation thiab txo qis yog tias hydrogenation yuav tsum muaj cov catalyst thaum txo qis tsis tas yuav muaj cov catalyst tshwj tsis yog nws yog hydrogenation.
