ʻO ka Platinum palladium ka mea hoʻoheheʻe metala makamae he mea hoʻomaʻamaʻa hoʻomaʻemaʻe kinoea maikaʻi loa, ua haku ʻia ʻo Pt a me Pd a me nā metala makamae ʻē aʻe, no laila he kiʻekiʻe loa ka hana catalytic a me ke koho.Hiki iā ia ke hoʻololi maikaʻi i nā mea ʻino i loko o ke kinoea hoʻopau a hoʻohuli iā lākou i mea ʻino ʻole, a laila e hōʻemi i ka hoʻokuʻu ʻana o ke kinoea hoʻopau a pale i ke kaiapuni a me ke olakino kanaka a mākou e hilinaʻi nei.
ʻO nā mea koʻikoʻi o ka platinum a me ka palladium catalysts he mau metala makamae e like me ka platinum a me ka palladium, a ʻo ke koho ʻana o kēia mau metala makamae he mea koʻikoʻi loa ia, e hilinaʻi nui ʻia i ke ʻano noiʻi o ka catalyst a me nā koi o ka hopena catalytic.Ma keʻano laulā, ʻo ka ratio nui o ka platinum a me ka palladium i ka platinum a me ka palladium catalysts he 1: 1 a i ʻole 2: 1, a hiki i kēia ratio ke hoʻokō i ka hopena catalytic maikaʻi loa.Eia kekahi, he mea koʻikoʻi loa ke kākoʻo o ka platinum palladium catalyst, a he hopena koʻikoʻi i ka hana o ka catalyst.ʻO nā mea lawe maʻamau he alumini oxide, silicon oxide, yttrium oxide, etc., e hāʻawi i kahi substrate paʻa no ka catalyst a hōʻoia i ka hopena catalytic maikaʻi loa.
ʻO nā ʻano hoʻomākaukau maʻamau o ka platinum a me ka palladium catalysts e pili ana i ka impregnation, co-precipitation, precipitation, physical mixing a pēlā aku.ʻO ke ʻano o ka impregnation, ʻo ia ka hoʻokomo ʻana i kahi mea lawe ʻino (ʻo ia hoʻi he oxide) i loko o kahi hopena i loaʻa i nā ion platinum a me nā palladium, a laila e hana i nā ʻano hana e like me ka maloʻo ʻana a me ka hōʻemi ʻana, a loaʻa i ka platinum a me ka palladium catalyst.ʻO ke ʻano coprecipitating ʻo ia ka mea lawe ʻino a me nā platinum a me nā ion palladium i hoʻohui ʻia i ka ʻōnaehana hopena, a ʻo ka platinum a me nā ion palladium e hoʻoheheʻe pū ʻia ma luna o ka ʻili o ka mea lawe maikaʻi ʻole e hana i ka platinum a me ka palladium catalyst ma ka mālama ʻana i ka waiwai pH a mahana o ka hoʻonā.ʻO ka platinum palladium catalyst i loaʻa i kēia ʻano nā hiʻohiʻona o ka hana kiʻekiʻe, ke koho kiʻekiʻe a me ke kūpaʻa kiʻekiʻe, e hōʻoiaʻiʻo ana i ka pono a me ka palekana o ka mālama kino kino.
Ke hoʻohana nei i ka platinum a me ka palladium mea hoʻoheheʻe metala makamae, pono mākou e hoʻolohe i nā mea palekana.ʻO ka mea mua, pono e pale aku i nā kūlana pōʻino e like me ka lapalapa ākea, ka wela kiʻekiʻe a me ka uila static, hiki ke alakaʻi i ka hōʻemi ʻana o ka hana catalyst a hiki i ka pōʻino.ʻO ka lua, pono e nānā a hoʻololi pinepine ʻia ka catalyst e hōʻoia i kāna hana maʻamau a loaʻa ka hopena catalytic maikaʻi loa.
Ka manawa hoʻouna: Oct-27-2023