{"id":4638,"date":"2020-04-20T15:44:50","date_gmt":"2020-04-20T08:44:50","guid":{"rendered":"https:\/\/bacdau.vn\/?post_type=kb&p=4638"},"modified":"2020-04-20T15:44:50","modified_gmt":"2020-04-20T08:44:50","slug":"dac-diem-va-tinh-chat-cua-khi-cfc","status":"publish","type":"kb","link":"https:\/\/bacdau.vn\/kb\/dac-diem-va-tinh-chat-cua-khi-cfc\/","title":{"rendered":"\u0110\u1eb7c \u0111i\u1ec3m v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a kh\u00ed CFC"},"content":{"rendered":"

\u0110\u1eb7c \u0111i\u1ec3m v\u00e0 t\u00ednh ch\u1ea5t c\u1ee7a kh\u00ed CFC<\/h2>\n

M\u1ed9t trong nh\u1eefng lo\u1ea1i kh\u00ed quan tr\u1ecdng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m l\u1ea1nh \u0111\u00f3 ch\u00ednh l\u00e0 kh\u00ed CFC. V\u1eady kh\u00ed CFC l\u00e0 g\u00ec?<\/strong> n\u00f3 c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 t\u00ednh ch\u1ea5t nh\u01b0 th\u1ebf n\u00e0o? M\u1eddi c\u00e1c b\u1ea1n c\u00f9ng v\u1edbi bacdau.vn<\/strong> \u0111i gi\u1ea3i \u0111\u00e1p nh\u1eefng v\u1ea5n \u0111\u1ec1 th\u1eafc m\u1eafc n\u00e0y nh\u00e9!<\/p>\n

\"\"<\/p>\n

Kh\u00e1i ni\u1ec7m kh\u00ed CFC<\/h3>\n

CFC<\/strong> c\u00f3 t\u00ean vi\u1ebft t\u1eaft l\u00e0 Chlorofluorocarbon<\/em>, l\u00e0 t\u00ean c\u1ee7a m\u1ed9t lo\u1ea1i h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 bao g\u1ed3m c\u00e1c nguy\u00ean t\u1ed1 nh\u01b0 Clo, Cacbon hay Flo, l\u00e0 h\u1ed7n h\u1ee3p \u0111\u01b0\u1ee3c con ng\u01b0\u1eddi s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong s\u1ea3n xu\u1ea5t c\u00f4ng nghi\u1ec7p v\u00e0 l\u00e0m l\u1ea1nh. C\u0169ng ch\u00ednh t\u1eeb \u0111\u00f3 m\u00e0 kh\u00ed CFC \u0111\u00e3 x\u00e2m nh\u1eadp v\u00e0o b\u1ea7u kh\u00f4ng kh\u00ed l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng c\u1ee7a con ng\u01b0\u1eddi, l\u00e0m \u00f4 nhi\u1ec5m m\u00f4i tr\u01b0\u1eddng kh\u00f4ng kh\u00ed.<\/p>\n

CFC bao g\u1ed3m CFC 11, CFCl3 hay CFCl2. \u0110\u00e2y l\u00e0 h\u1ee3p ch\u1ea5t do nh\u00e0 khoa h\u1ecdc Frederic Swarts ng\u01b0\u1eddi B\u1ec9 t\u1ed5ng h\u1ee3p ra t\u1eeb h\u1ee3p ch\u1ea5t CCl4 (Carbon tetraclorua). \u00d4ng \u0111\u00e3 thay \u0111\u1ed5i clo trong CCl4 b\u1eb1ng flo v\u00e0 t\u1ea1o ra CFC \u2013 11 (CCl3F) v\u00e0 CFC \u2013 12 (CCl2F2).<\/p>\n

\u0110\u1eb7c \u0111i\u1ec3m t\u00ednh ch\u1ea5t kh\u00ed CFC<\/h3>\n

C\u00f4ng th\u1ee9c ho\u00e1 h\u1ecdc c\u1ee7a kh\u00ed CFC gi\u1ed1ng v\u1edbi c\u00f4ng th\u1ee9c ho\u00e1 h\u1ecdc ankan \u0111\u01a1n gi\u1ea3n, khi \u0111\u00f3 c\u00e1c nguy\u00ean t\u1eed cacbon c\u00f3 trong kh\u00ed CFC s\u1ebd li\u00ean k\u1ebft v\u1edbi nhau theo ki\u1ec3u li\u00ean k\u1ebft \u0111\u1ed1i x\u1ee9ng, v\u00e0 trong qu\u00e1 tr\u00ecnh ph\u1ea3n \u1ee9ng s\u1ebd d\u1ec5 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng bay c\u00e1c kh\u00ed methane, ethane v\u00e0 propane.<\/p>\n

CFC l\u00e0 ch\u1ea5t c\u00f3 t\u00ednh v\u1eadt l\u00fd d\u1ec5 bay h\u01a1n, cho n\u00ean n\u00f3 c\u00f3 \u0111i\u1ec3m s\u00f4i th\u1ea5p v\u00e0 r\u1ea5t kh\u00f3 c\u00f3 th\u1ec3 x\u1ea3y ra ph\u1ea3n \u1ee9ng ho\u00e1 h\u1ecdc. \u0110\u1eb7c bi\u1ec7t h\u01a1n \u1edf CFC l\u00e0 n\u1ebfu qu\u00e1 tr\u00ecnh ph\u00e2n c\u1ef1c c\u1ee7a c\u00e1c clorua cao h\u01a1n qu\u00e1 tr\u00ecnh \u0111i\u1ec7n ph\u00e2n c\u1ee7a florua th\u00ec CFC s\u1ebd c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng \u0111i\u1ec3m s\u00f4i cao h\u01a1n, v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. \u1ede CFC c\u0169ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng d\u1ec5 ch\u00e1y h\u01a1n so v\u1edbi c\u00e1c metan v\u00e0 ch\u00fang c\u00f3 m\u1eadt \u0111\u1ed9 cao h\u01a1n.<\/p>\n

\"\"<\/p>\n

C\u00e1c c\u00e1ch \u0111i\u1ec1u ch\u1ebf kh\u00ed CFC<\/h3>\n

Ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ebf th\u00f4ng d\u1ee5ng nh\u1ea5t c\u1ee7a kh\u00ed CFC l\u00e0 t\u1ea1o ra s\u1ef1 trao \u0111\u1ed5i c\u1ee7a c\u00e1c halogen. Khi \u0111\u00f3, n\u00f3 s\u1ebd b\u1eaft \u0111\u1ea7u t\u1eeb c\u00e1c methane v\u00e0 ethane c\u00f3 ch\u1ee9a kh\u00ed clo. V\u00e0 CFC c\u0169ng \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t ra t\u1eeb qu\u00e1 tr\u00ecnh t\u1ed5ng h\u1ee3p chloroform.<\/p>\n

Ph\u01b0\u01a1ng tr\u00ecnh ho\u00e1 h\u1ecdc \u0111i\u1ec1u ch\u1ebf CFC:<\/strong> HCCl3+2HF\u2192HCF2Cl+2HCl<\/em><\/p>\n

T\u00e1c h\u1ea1i c\u1ee7a kh\u00ed CFC \u0111\u1ed1i v\u1edbi \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y<\/h3>\n

Nh\u01b0 \u1edf tr\u00ean bacdau.vn \u0111\u00e3 gi\u1edbi thi\u1ec7u th\u00ec \u0111\u00e2y l\u00e0 ch\u1ea5t t\u00ednh \u1ed5n \u0111\u1ecbnh cao v\u00e0 r\u1ea5t kh\u00f3 ph\u00e2n hu\u1ef7, cho n\u00ean, khi ch\u00fang x\u00e2m nh\u1eadp \u0111\u01b0\u1ee3c v\u00e0o b\u1ea7u kh\u00f4ng kh\u00ed, khi \u0111\u00f3 ch\u00fang s\u1ebd b\u1ecb c\u00e1c tia c\u1ef1c t\u00edm ph\u00e2n hu\u1ef7. M\u1eb7c d\u00f9 c\u00f3 t\u00ednh \u1ed5n \u0111\u1ecbnh cao nh\u01b0ng t\u1ed1c \u0111\u1ed9 ph\u00e2n h\u1ee7y c\u1ee7a CFC l\u1ea1i r\u1ea5t nhanh khi t\u1ea7ng ozon b\u1ecb t\u1ed5n th\u01b0\u01a1ng.<\/p>\n

Ch\u00ednh v\u00ec v\u1eady, kh\u00ed CFC r\u1ea5t c\u00f3 \u0111\u1ed9c \u0111\u1ed1i v\u1edbi t\u1ea7ng ozon, s\u1ebd c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ph\u00e1 hu\u1ef7 t\u1ea7ng ozon, ngo\u00e0i ra c\u00f2n khi\u1ebfn cho tr\u00e1i \u0111\u1ea5t ti\u1ebfp x\u00fac v\u1edbi tia c\u1ef1c t\u00edm nhanh h\u01a1n b\u00ecnh th\u01b0\u1eddng. C\u00f2n n\u1ebfu nh\u01b0 CFC kh\u00f4ng b\u1ecb ph\u00e1 hu\u1ef7 th\u00ec n\u00f3 c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i \u0111\u1ebfn 100 n\u0103m.<\/p>\n

Ngo\u00e0i vi\u1ec7c g\u00e2y h\u1ea1i \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng, CFC c\u0169ng l\u00e0 m\u1ed9t lo\u1ea1i kh\u00ed \u0111\u1ed9c. M\u1eb7c d\u00f9 c\u00f3 \u0111\u1ed9c t\u00ednh kh\u00f4ng cao nh\u01b0ng n\u1ebfu con ng\u01b0\u1eddi ti\u1ebfp x\u00fac v\u1edbi n\u1ed3ng \u0111\u1ed9 qu\u00e1 11% s\u1ebd g\u00e2y ra c\u00e1c t\u00ecnh tr\u1ea1ng ch\u00f3ng m\u1eb7t, m\u1ea5t t\u1eadp trung, tr\u1ea7m c\u1ea3m h\u1ec7 th\u1ea7n kinh trung \u01b0\u01a1ng v\u00e0 lo\u1ea1n nh\u1ecbp tim. N\u1ebfu n\u1eb7ng h\u01a1n c\u00f3 th\u1ec3 g\u00e2y ra t\u1eed vong.<\/p>\n

Hi v\u1ecdng v\u1edbi nh\u1eefng chia s\u1ebb tr\u00ean v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m, t\u00ednh ch\u1ea5t c\u1ee7a kh\u00ed CFC<\/strong>. Hi v\u1ecdng b\u1ea1n s\u1ebd gi\u00fap b\u1ea1n b\u1ed5 sung th\u00eam \u0111\u01b0\u1ee3c \u00edt ki\u1ebfn th\u1ee9c v\u00e0 c\u00f3 nh\u1eefng th\u1eddi gian vui v\u1ebb b\u00ean BacDau.Vn<\/strong> nh\u00e9<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t trong nh\u1eefng lo\u1ea1i kh\u00ed quan tr\u1ecdng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m l\u1ea1nh \u0111\u00f3 ch\u00ednh l\u00e0 kh\u00ed CFC. V\u1eady kh\u00ed CFC l\u00e0 g\u00ec? n\u00f3 c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m v\u00e0 t\u00ednh ch\u1ea5t nh\u01b0 th\u1ebf n\u00e0o? M\u1eddi c\u00e1c b\u1ea1n c\u00f9ng v\u1edbi bacdau.vn \u0111i gi\u1ea3i \u0111\u00e1p nh\u1eefng v\u1ea5n \u0111\u1ec1 th\u1eafc m\u1eafc n\u00e0y nh\u00e9!<\/p>\n","protected":false},"author":1,"featured_media":4639,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"kbtopic":[764],"kbtag":[],"_links":{"self":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb\/4638"}],"collection":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb"}],"about":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/types\/kb"}],"author":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/comments?post=4638"}],"version-history":[{"count":0,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kb\/4638\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/media\/4639"}],"wp:attachment":[{"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/media?parent=4638"}],"wp:term":[{"taxonomy":"kbtopic","embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kbtopic?post=4638"},{"taxonomy":"kbtag","embeddable":true,"href":"https:\/\/bacdau.vn\/wp-json\/wp\/v2\/kbtag?post=4638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}