Hoʻoheheʻe Dehydrogenation
Hoʻoheheʻe Dehydrogenation
- Kiʻekiʻe Mahana Dehydrogenation Catalytic Technology
E like me ka iron oxide - chromium oxide - potassium oxide hiki ke hana i ka ethylbenzene (a i ʻole n-butene) dehydrogenation i styrene (a i ʻole butadiene) ma lalo o ka wela kiʻekiʻe a me ka nui o ka mahu wai.
- ʻenehana catalytic dehydrogenation wela haʻahaʻa
No ka mea, pono e hoʻokō ʻia ka dehydrogenation ma ke kiʻekiʻe wela, decompression a i ʻole i mua o ka nui o nā diluents, nui ka hoʻohana ʻana i ka ikehu.I nā makahiki i hala iho nei, ua hoʻomohala ʻia ka dehydrogenation oxidative ma nā haʻahaʻa haʻahaʻa.E like me ka polyethylene me ka bismuth - molybdenum metal oxide catalyst ma ka oxidative dehydrogenation o ka butadiene.
He mea hoʻoheheʻe waiʻaʻole i hoʻohana wale ʻia i ka hana hana, akā hoʻohana nui ʻia i ka hana hoʻomaʻemaʻe o nā mea maka a me nā huahana.Wahi a nā kūlana hydrogenation like ʻole, hiki ke hoʻokaʻawale ʻia i ʻekolu mau ʻāpana:
① Pono e koho mua ʻia nā mea hoʻoheheʻe hydrogenation, e like me ka ethylene a me ka propylene i loaʻa mai ka petroleum hydrocarbon cracking ma ke ʻano he polymerization raw material, e koho mua ʻia e ka hydrogenation, e wehe i nā mea haumia e like me ka alkyne, diene, carbon monoxide, carbon dioxide, oxygen, a ʻaʻohe nalowale o ka ene .ʻO ka catalyst i hoʻohana ʻia ʻo ia ka palladium, platinum a i ʻole nickel, cobalt, molybdenum, etc., ma ka alumina.
② ʻAʻole koho koho hydrogenation catalyst, ʻo ia hoʻi, ka mea hoʻoheheʻe i hoʻohana ʻia no ka hydrogenation hohonu i nā pūhui saturated.E like me benzene hydrogenation i cyclohexane me nickel-alumina catalyst, phenol hydrogenation i cyclohexanol, he dinitrile hydrogenation i hexdiamine me ka nickel catalyst.
③ Hydrogenation catalyst, e like me ka copper chromate catalyst no ka aila hydrogenation e hana ai i na waiona kiekie.
ʻO ia ka catalyst paʻakikī mua loa i hoʻohana ʻia i ka hana ʻoihana.Hoʻopuka ʻia nā ʻaldehydes me hoʻokahi ʻātoma kalapona e ka pane ʻana o nā alkenes me nā syngas (CO+H2) i mua o ka catalyst.E like me ka ethylene, propylene e like me nā mea maka ma o ka hydroformylation (ʻo ia hoʻi, ʻike ʻia ʻo carbonyl synthesis) propyl aldehyde, butyl aldehyde.Ua lawe ʻia ka Hydroformylation ma ka pae wai ma ke kiʻekiʻe wela a me ke kaomi me ka hoʻohana ʻana i ka carbonyl cobalt complex e like me ka catalyst.
Hoʻokaʻawale nui ʻia ka polyethylene i ka haʻahaʻa haʻahaʻa a me ke kiʻekiʻe kiʻekiʻe.I ka wā ma mua, ua hoʻohana ka mea mua i ke ʻano kiʻekiʻe kiʻekiʻe (100 ~ 300MPa) hana, oxygen, organic peroxide e like me ka catalyst.Hoʻopuka nui ʻia ka mea hope e ke ʻano kaomi medium a i ʻole ke ala kaomi haʻahaʻa.Ma ke ʻano puʻe haʻahaʻa, lawe ʻia ka chromium-molybdenum oxide ma ke kāpili alumini silika ma ke ʻano he catalyst.Ma ke ala haʻahaʻa haʻahaʻa, Ziegler type catalyst (i hōʻike ʻia e ka titanium tetrachloride a me ka triethyl alumini system) hoʻohana ʻia no ka polymerization ma ka haʻahaʻa haʻahaʻa a me ke kaomi haʻahaʻa.Hoʻokumu pū ʻia ka hana polypropylene i kākoʻo ʻia i ka ʻōnaehana titanium-alumini o ka catalyst kiʻekiʻe, no ka gram of titanium hiki ke hana ma mua o 1000kg o polypropylene.
ʻO ia ka catalyst paʻakikī mua loa i hoʻohana ʻia i ka hana ʻoihana.Hoʻopuka ʻia nā ʻaldehydes me hoʻokahi ʻātoma kalapona e ka pane ʻana o nā alkenes me nā syngas (CO+H2) i mua o ka catalyst.E like me ka ethylene, propylene e like me nā mea maka ma o ka hydroformylation (ʻo ia hoʻi, ʻike ʻia ʻo carbonyl synthesis) propyl aldehyde, butyl aldehyde.Ua lawe ʻia ka Hydroformylation ma ka pae wai ma ke kiʻekiʻe wela a me ke kaomi me ka hoʻohana ʻana i ka carbonyl cobalt complex e like me ka catalyst.
E kākau i kāu leka ma aneʻi a hoʻouna mai iā mākou
