ʻO ke kumu o ka hoʻohana ʻana i ka pauka alumina ma ke ʻano he mea lawe catalyst

ʻO ka hapa nui o ka hydrogenation catalyst no ka mea lawe catalyst alumina mua me kahi kiko hoʻā ahi kiʻekiʻe, kahi kiko heheʻe kiʻekiʻe, e hōʻike ana he ʻano oxide refractory ia, e hana ana i nā mea catalyst liʻiliʻi i hoʻopuehu nui ʻia mai kekahi i kekahi, i mea e pale aku ai i ka hōʻuluʻulu ʻana o ka mea lawe catalyst a i ʻole sintering ʻana o ka lua, aia ka alumina i loko o kahi pae mahana ākea, a hana i kona ʻano kūloko ma lalo o ke kiʻekiʻe o ka mahana ke paʻa ka hoʻonohonoho hou ʻana o ke kristal i nā mahana kiʻekiʻe, pale ʻaʻahu, hana hoʻoili wela maikaʻi hoʻi, aia ka ʻili alumina acidic a me ke kikowaena alkaline e like me ka hopena waikawa i loko o ka alkaline medium, a hiki ke hana e like me ka alkali i loko o ka acidic medium. No ka mea lawe catalyst alumina, no laila, loaʻa ke kākoʻo a me ka hoʻopuehu ʻana o nā metala makamae i ka hopena dilute a hana i ka hoʻolaha ʻana o ka ʻili metala i loko o ka metastable liʻiliʻi o ka palaoa i lilo i paʻa, ʻaʻole maʻalahi ka hōʻiliʻili a ʻoi aku ka nui o ka sintering e like me ka alumina oxide o alumina, alumini i ka papaʻaina a me ke kelepona, hana i nā oxides a waiho i kahi lua, me ka hapa void kiʻekiʻe a me ka nui o ka mālama ʻana, hiki ke hoʻopaʻa ʻia nā ʻāpana catalytic i kona wahi kūloko, a he kūpono ia e hoʻolaha i ke kikowaena hana o nā reactants a me nā huahana e waiho ana i ke kikowaena hana. Hōʻike kēia mau mea āpau he hana maikaʻi loa ka alumina. o ka mea lawe catalyst.