Ke ʻano hana hoʻomake ʻana o Glyoxal o ka waikawa Oxalic
Loaʻa iā Glyoxal ka hiki ke hoʻemi ʻia, no laila hiki ke hoʻololi koke ʻia i ka waikawa oxalic ma lalo o ka hana a ka waikawa nitric oxidizing ikaika. Ma muli o nā kumu e like me ka lako o nā mea maka, ke kumukūʻai, a me ka ʻenehana, ʻaʻole maikaʻi ka hoʻokūkū mākeke o kēia ʻano hana a ʻaʻole i hoʻomohala ʻia.
Eia kekahi, aia kekahi mau ʻano hana synthetic no ka waikawa oxalic:
(1) Ke ʻano hana hoʻomākaukau kalapona ʻokikene: Hoʻemi mua ʻia ke kalapona ʻokikene i ka waena
CO2
a laila hoʻololi ʻia i nā mea olaola ʻē aʻe. Loaʻa ka waikawa Oxalic ma ka hoʻomālamalama ʻana i nā ʻōnaehana kalapona dioxide like ʻole me nā ʻano electrochemical a me nā kukuna γ, ka lā, a i ʻole nā ​​kukui mercury kiʻekiʻe.
(2) Ke ʻano hoʻoheheʻe ʻana o ka alkali me ka hoʻohana ʻana i nā mea waiwai i ka cellulose: Hoʻoheheʻe pū ʻia kahi hui ʻana o nā mea waiwai i ka cellulose (e like me ka lāʻau ʻōpala, ka ʻōpala, a me nā mea ʻē aʻe) a me ka alkali ikaika inorganic ma 513-558 K e hana i ka oxalate ma mua o 50%. Hoʻopuka ʻia nā kristal oxalate e ka crystallization, a laila hoʻohana ʻia ka waikawa sulfuric e loaʻa ai ka waikawa oxalic i hoʻopau ʻia. He hana maʻalahi kēia ʻano hana no ka hoʻomākaukau ʻana i ka waikawa oxalic, akā haʻahaʻa ka helu hoʻololi hoʻokahi-pass (ʻaʻole ma mua o 35%), kiʻekiʻe ka hoʻohana ʻana i ka alkali, a koʻikoʻi ka haumia o ke kaiapuni.
(3) Ke ʻano hana hana lanahu maka: Hoʻomākaukau ʻia mai nā peats like ʻole ma ke ʻano he mau mea maka. No ka laʻana, hana ʻia ka waikawa oxalic mai ka peat o ka genera Sphagnum lāua ʻo Polytrichum ma o ka oxidation waikawa nitric. Hana ʻia ka hopena ma 343 K no 8-9 mau hola, me ka hua a hiki i 95%. Ke hoʻohana ʻia nā mea maka e like me ke kēpau lanahu e hana i ka waikawa oxalic, hiki pū ka hua i 51%.

ʻO Shandong Pulisi Chemical Co., Ltd. - Luna Hoʻomalu o ka ʻakika Oxalic (ʻakika Ethanedioic)