nūhou

ʻO ka mea nui o ka diatomite ma ke ʻano he mea lawe ʻo SiO2. No ka laʻana, ʻo ka mea ikaika o ka vanadium catalyst ʻoihana ʻo V2O5, ʻo ka cocatalyst he alkali metala sulfate, a ua hoʻomaʻemaʻe ʻia ka mea lawe i ka diatomite. Hōʻike nā hualoaʻa he hopena hoʻokūpaʻa ko SiO2 i nā mea hana, a hoʻonui ia me ka piʻi ʻana o ka ʻike K2O a i ʻole Na2O. ʻO ka hana a ka catalyst e pili pū ana me ka hoʻopuehu ʻana o ke kākoʻo a me ka hoʻolālā pore. Ma hope o ka mālama ʻana i ka diatomite me ka waikawa, hoʻemi ʻia ka ʻike o ka haumia o ka oxide, piʻi ka SiO2 maʻi, hoʻonui ʻia ka ʻili a me ka nui o ka pore, no laila ʻoi aku ka maikaʻi o ka hopena lawe o ka diatomite hoʻomaʻemaʻe ma mua o ka diatomite maoli.

Hoʻokumu ʻia ka diatomite mai ke koena o nā silicates ma hope o ka make ʻana o nā algae-celled hoʻokahi, i kapa ʻia ʻo diatoms, a ʻo ia ka hydrated amorphous SiO2. Hiki i nā diatoms ke ola i ka wai hou a me ka wai paʻakai. Nui nā ʻano diatoms, hiki ke hoʻokaʻawale ʻia i nā diatoms "waena waena" a me nā diatoms "feather striata". I kēlā me kēia kauoha, he nui nā "genera", he paʻakikī loa.

ʻO ka mea nui o ka diatomite maoli ʻo SiO2. He keʻokeʻo ka diatomite kiʻekiʻe, a ʻoi aku ka nui o ka SiO2 ma mua o 70%. ʻAʻole waihoʻoluʻu nā diatoms hoʻokahi, a ʻo ka waihoʻoluʻu o ka diatomite e pili ana i nā minelala pālolo a me nā mea organik, a me nā mea ʻē aʻe, a ʻokoʻa ke ʻano o nā diatoms mai nā kumu mineral like ʻole.

ʻO ka diatomite kahi waihona diatomite mōʻalihaku i hoʻokumu ʻia ma hope o kahi manawa hoʻouluulu ma kahi o 10,000 a 20,000 mau makahiki ma hope o ka make ʻana o nā mea kanu hoʻokahi i kapa ʻia he diatoms. ʻO nā diatoms kekahi o nā protozoa mua i ʻike ʻia ma ka Honua, e noho ana i loko o ke kai a me nā loko. ʻO kēia diatom, nāna e hāʻawi i ka oxygen i ka honua ma o photosynthesis, nona ke kuleana no ka hānau ʻana o ke kanaka a me nā holoholona a me nā mea kanu.

Hoʻokumu ʻia kēia ʻano diatomite e ka waiho ʻana o nā koena o ka diatomite mea kanu wai hoʻokahi. ʻO ka waiwai kūʻokoʻa o ka diatomite ʻo ia ka hiki ke hoʻopaʻa i ke silikoni manuahi i loko o ka wai e hana ai i kona iwi. I ka pau ʻana o kona ola, hiki iā ia ke waiho a hana i kahi waihona diatomite ma lalo o kekahi mau kūlana honua. Loaʻa iā ia kekahi mau waiwai kūʻokoʻa, e like me ka porosity, ka haʻahaʻa haʻahaʻa, ka ʻāpana kikoʻī nui, ka incompressibility pili a me ka paʻa kemika, a hiki i ka lepo kumu, ka ʻohi ʻana, ka calcination, e like me ka hoʻokaʻawale ʻana o ka ea, i ke kaʻina hana paʻakikī e hoʻololi i kāna puʻupuʻu nui a me nā waiwai ili, kūpono no ka uhi ʻana i nā mea hoʻohui pena, a me nā koi ʻoihana ʻē aʻe.