nūhou

ʻO ka mea nui o ka honua diatomaceous ma ke ʻano he mea lawe ʻo SiO2. No ka laʻana, ʻo ka mea hoʻoikaika o ka vanadium catalyst ʻoihana ʻo V2O5, ʻo ka mea hoʻolaha he alkali metala sulfate, a ʻo ka mea lawe i hoʻomaʻemaʻe ʻia i ka honua diatomaceous. Hōʻike nā hoʻokolohua e loaʻa i ka SiO2 kahi hopena paʻa i nā mea hana, a hoʻoikaika ia me ka hoʻonui ʻana o ka ʻike K2O a i ʻole Na2O. ʻO ka hana o ka catalyst pili pū me ka dispersion pore structure o ka carr

ier. Ma hope o ka mālama ʻia ʻana o ka diatomite me ka waikawa, ua hoʻemi ʻia ka ʻike o ka haumia o ka oxide, hoʻonui ʻia ka ʻike SiO2, a hoʻonui pū ʻia ka ʻāpana kikoʻī a me ka pore volume. No laila, ʻoi aku ka maikaʻi o ka hopena lawe o ka diatomite i hoʻomaʻemaʻe ʻia ma mua o ka diatomite maoli.

Hoʻokumu ʻia ka honua diatomaceous e nā koena o ka silicate ma hope o ka make ʻana o nā algae hoʻokahi-celled i kapa ʻia ʻo diatoms, a ʻo kona ʻano he SiO2 amorphous i loko o ka wai. Hiki ke ola nā diatoms i ka wai hou a me ka wai paʻakai. Nui nā ʻano diatoms. ʻO ka maʻamau, hiki ke hoʻokaʻawale ʻia lākou i "kauoha waena" diatoms a me "pinnacle order" diatoms. I kēlā me kēia kauoha, nui nā "genus", he paʻakikī loa.

ʻO ka mea nui o ka honua diatomaceous maoli ʻo SiO2, keʻokeʻo nā mea kiʻekiʻe, a ʻoi aku ka nui o ka SiO2 ma mua o 70%. ʻAʻole waihoʻoluʻu nā diatoms Monomer. ʻO ke kala o ka honua diatomaceous e pili ana i nā minerala pālolo a me nā mea organik. He ʻokoʻa ke ʻano o nā diatoms ma nā kumu mineral like ʻole.

ʻO ka honua diatomaceous kahi waihona honua diatomaceous fossilized i hoʻokumu ʻia ma hope o ka make ʻana o kahi mea kanu hoʻokahi-cell i kapa ʻia ʻo diatom ma hope o ka hoʻohui ʻana ma kahi o 10,000 a 20,000 mau makahiki. ʻO nā diatoms kekahi o nā mea kūʻē mua i ʻike ʻia ma ka honua, e noho ana i loko o ka wai kai a i ʻole ka wai loko. ʻO kēia diatom ka hāʻawi ʻana i ka oxygen i ka honua ma o photosynthesis a hāpai i ka hānau ʻana o ke kanaka, nā holoholona a me nā mea kanu.