ʻO ke kākoʻo Catalyst kahi ʻāpana kūikawā o ka catalyst paʻa. ʻO ia ka dispersant, binder a me ke kākoʻo o nā mea hana o ka catalyst, a i kekahi manawa ke pāʻani nei i ke kuleana o Co catalyst a i ʻole cocatalyst. Kākoʻo Catalyst, ʻike ʻia hoʻi he kākoʻo, ʻo ia kekahi o nā ʻāpana o ka catalyst kākoʻo. He mea porous maʻamau me kahi ʻāpana ili. Hoʻopili pinepine ʻia nā mea hana o ka catalyst. Hoʻohana nui ʻia ka mea lawe e kākoʻo i nā mea hana a hana i ka catalyst i nā waiwai kino kikoʻī. Eia nō naʻe, ʻaʻohe hana catalytic o ka mea lawe.
Nā koi no ke kākoʻo catalyst
1. Hiki iā ia ke hoʻoheheʻe i ka nui o nā mea hana, ʻoi aku ka nui o nā metala makamae
2. A hiki ke hoomakaukau i kekahi ano
3. Hiki ke pale ʻia ka sintering ma waena o nā mea hana i kekahi ʻano
4. Hiki ke pale i ka mea make
5. Hiki iā ia ke launa pū me nā mea hana a hana pū me ka catalyst nui.
Ka hopena o ke kākoʻo catalyst
1. E hoemi i ke kumu kuai catalyst
2. Hoʻonui i ka ikaika mechanical o ka catalyst
3. Hoʻonui i ka paʻa wela o nā catalysts
4. ʻO ka hana a me ke koho ʻana o ka catalyst i hoʻohui ʻia
5. Hoʻonui i ke ola catalyst
Hoʻolauna i kekahi mau mea lawe mua
1. ʻO ka alumina i hoʻoulu ʻia: ka mea lawe nui loa no nā catalysts ʻoihana. He maʻalahi, he kiʻekiʻe ke kūpaʻa wela, a he pilina maikaʻi no nā mea hana.
2. Silica gel: ʻo ka hui kemika ʻo SiO2. Hoʻomākaukau ʻia ia e ka wai aniani wai acidifying (Na2SiO3). Hoʻokumu ʻia ka silicate ma hope o ka hana ʻana o ka sodium silicate me ka waikawa; ʻO ka ʻakika Silicic ka polymerize a condenses e hana i nā polymers me ke ʻano maopopo ʻole.
ʻO SiO2 kahi mea lawe nui i hoʻohana ʻia, akā ʻoi aku ka liʻiliʻi o kāna noi ʻoihana ma mua o ka Al2O3, ʻo ia ka mea ma muli o nā hemahema e like me ka hoʻomākaukau paʻakikī, ka pilina nāwaliwali me nā mea hana, a me ka sintering maʻalahi ma lalo o ka noho pū ʻana o ka wai.
3. Molecular sieve: he crystalline silicate a aluminosilicate, ʻo ia ka pore a me ka ʻōnaehana lua i haku ʻia me ka silicon oxygen tetrahedron a i ʻole alumini oxygen tetrahedron i hoʻopili ʻia e ka pilina o ke alahaka oxygen. Loaʻa iā ia ke kūpaʻa wela kiʻekiʻe, hydrothermal stability a me ka waikawa a me ke kūpaʻa alkali
Ka manawa hoʻouna: Jun-01-2022
