{"id":136624,"date":"2025-12-11T14:09:10","date_gmt":"2025-12-11T06:09:10","guid":{"rendered":"https:\/\/www.alpapowder.com\/136624\/"},"modified":"2025-12-11T14:09:10","modified_gmt":"2025-12-11T06:09:10","slug":"tai-sao-nhom-hydroxit-lai-hieu-qua-den-vay-trong-viec-dieu-tri-cac-van-de-ve-da-day","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/136624\/","title":{"rendered":"T\u1ea1i sao nh\u00f4m hydroxit l\u1ea1i hi\u1ec7u qu\u1ea3 \u0111\u1ebfn v\u1eady trong vi\u1ec7c \u0111i\u1ec1u tr\u1ecb c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 d\u1ea1 d\u00e0y?"},"content":{"rendered":"

\"\"<\/p>\n

Nh\u00f4m oxit, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 alumina, v\u1edbi c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc Al2O3, l\u00e0 oxit ph\u1ed5 bi\u1ebfn th\u1ee9 hai trong v\u1ecf Tr\u00e1i \u0111\u1ea5t sau silic dioxit, v\u00e0 \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y r\u1ed9ng r\u00e3i trong c\u00e1c kho\u00e1ng ch\u1ea5t nh\u01b0 fenspat v\u00e0 mica. Trong c\u00f4ng nghi\u1ec7p, n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c tinh ch\u1ebf t\u1eeb nguy\u00ean li\u1ec7u kho\u00e1ng t\u1ef1 nhi\u00ean \u2013 bauxite \u2013 \u0111\u1ec3 thu \u0111\u01b0\u1ee3c alumina.<\/p>\n

Theo ngh\u0129a r\u1ed9ng h\u01a1n, nh\u00f4m oxit l\u00e0 thu\u1eadt ng\u1eef chung cho c\u00e1c oxit nh\u00f4m v\u00e0 hydroxit nh\u00f4m, m\u1ed9t nh\u00f3m c\u00e1c h\u1ee3p ch\u1ea5t bao g\u1ed3m nh\u00f4m, oxy v\u00e0 hydro. Do c\u00f3 nhi\u1ec1u d\u1ea1ng v\u00e0 t\u00ednh ch\u1ea5t kh\u00e1c nhau, nh\u00f4m oxit c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh nh\u00f4m oxit ng\u1eadm n\u01b0\u1edbc v\u00e0 nh\u00f4m oxit khan.<\/p>\n

C\u00e1c lo\u1ea1i nh\u00f4m oxit ng\u1eadm n\u01b0\u1edbc ph\u1ed5 bi\u1ebfn bao g\u1ed3m nh\u00f4m hydroxit c\u00f4ng nghi\u1ec7p, gibbsite, boehmite, pseudoboehmite, diaspore, corundum v\u00e0 tohdite. Trong s\u1ed1 \u0111\u00f3, nh\u00f4m hydroxit c\u00f4ng nghi\u1ec7p, gibbsite v\u00e0 boehmite l\u00e0 nh\u00f4m oxit ng\u1eadm ba ph\u00e2n t\u1eed n\u01b0\u1edbc, diaspore v\u00e0 corundum l\u00e0 nh\u00f4m oxit ng\u1eadm m\u1ed9t ph\u00e2n t\u1eed n\u01b0\u1edbc, v\u00e0 pseudoboehmite v\u00e0 tohdite l\u00e0 nh\u00f4m oxit ng\u1eadm nhi\u1ec1u ph\u00e2n t\u1eed n\u01b0\u1edbc.<\/p>\n

Theo ngh\u0129a r\u1ed9ng h\u01a1n, nh\u00f4m hydroxit l\u00e0 thu\u1eadt ng\u1eef chung cho nh\u00f4m oxit ng\u1eadm m\u1ed9t ph\u00e2n t\u1eed n\u01b0\u1edbc (meta-nh\u00f4m hydroxit) v\u00e0 nh\u00f4m oxit ng\u1eadm ba ph\u00e2n t\u1eed n\u01b0\u1edbc (ortho-nh\u00f4m hydroxit). Nh\u00f4m oxit ng\u1eadm n\u01b0\u1edbc kh\u00f4ng ph\u1ea3i l\u00e0 hydrat th\u1ef1c s\u1ef1 c\u1ee7a nh\u00f4m oxit, m\u00e0 nh\u1ea5n m\u1ea1nh c\u1ea5u tr\u00fac tinh th\u1ec3 c\u1ee7a nh\u00f4m hydroxit, trong \u0111\u00f3 c\u00e1c ion nh\u00f4m v\u00e0 hydroxit \u0111\u01b0\u1ee3c li\u00ean k\u1ebft b\u1eb1ng li\u00ean k\u1ebft ion, v\u00e0 t\u1ea5t c\u1ea3 c\u00e1c ion hydroxit \u0111\u1ec1u t\u01b0\u01a1ng \u0111\u01b0\u01a1ng nhau. Nh\u00f4m hydroxit th\u01b0\u1eddng l\u00e0 b\u1ed9t m\u00e0u tr\u1eafng, kh\u00f4ng m\u00f9i, kh\u00f4ng \u0111\u1ed9c, gi\u00e1 th\u00e0nh r\u1ebb v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i. Nh\u00f4m hydroxit n\u1ed5i ti\u1ebfng nh\u1ea5t v\u1edbi vi\u1ec7c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t ch\u1ed1ng ch\u00e1y \u0111\u01b0\u1ee3c th\u00eam v\u00e0o v\u1eadt li\u1ec7u n\u1ec1n polymer, n\u01a1i n\u00f3 th\u1ec3 hi\u1ec7n \u0111\u1eb7c t\u00ednh ch\u1ed1ng ch\u00e1y tuy\u1ec7t v\u1eddi.<\/p>\n

B\u1ea1n c\u00f3 nh\u1eadn th\u1ea5y r\u1eb1ng trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y, nh\u00f4m hydroxit th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m thu\u1ed1c ch\u1eefa b\u1ec7nh d\u1ea1 d\u00e0y kh\u00f4ng? N\u00f3 c\u00f3 t\u00e1c d\u1ee5ng kh\u00e1ng axit, h\u1ea5p ph\u1ee5, c\u1ea7m m\u00e1u t\u1ea1i ch\u1ed7 v\u00e0 b\u1ea3o v\u1ec7 v\u1ebft lo\u00e9t. Gel nh\u00f4m hydroxit c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 trung h\u00f2a axit d\u1ea1 d\u00e0y v\u00e0 c\u00f3 t\u00e1c d\u1ee5ng \u0111i\u1ec1u tr\u1ecb m\u1ed9t s\u1ed1 b\u1ec7nh d\u1ea1 d\u00e0y th\u00f4ng th\u01b0\u1eddng.<\/p>\n

Nguy\u00ean l\u00fd r\u1ea5t \u0111\u01a1n gi\u1ea3n: nh\u00f4m hydroxit l\u00e0 m\u1ed9t oxit l\u01b0\u1ee1ng t\u00ednh \u0111i\u1ec3n h\u00ecnh; n\u00f3 c\u00f3 th\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi c\u1ea3 axit v\u00e0 baz\u01a1. Do \u0111\u00f3, nh\u00f4m hydroxit c\u00f3 th\u1ec3 trung h\u00f2a ho\u1eb7c \u0111\u1ec7m axit d\u1ea1 d\u00e0y. Khi nh\u00f4m hydroxit ph\u1ea3n \u1ee9ng v\u1edbi axit d\u1ea1 d\u00e0y, nh\u00f4m clorua t\u1ea1o th\u00e0nh c\u00f3 t\u00e1c d\u1ee5ng l\u00e0m se, c\u00f3 th\u1ec3 gi\u00fap c\u1ea7m m\u00e1u t\u1ea1i ch\u1ed7, nh\u01b0ng c\u0169ng c\u00f3 th\u1ec3 g\u00e2y t\u00e1o b\u00f3n nh\u01b0 m\u1ed9t t\u00e1c d\u1ee5ng ph\u1ee5. Nh\u00f4m hydroxit, khi tr\u1ed9n v\u1edbi d\u1ecbch v\u1ecb, t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp gel bao ph\u1ee7 b\u1ec1 m\u1eb7t v\u1ebft lo\u00e9t, t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp m\u00e0ng b\u1ea3o v\u1ec7. B\u1ed9 phim n\u00e0y gi\u00fap b\u1ea3o v\u1ec7 ni\u00eam m\u1ea1c d\u1ea1 d\u00e0y kh\u1ecfi s\u1ef1 k\u00edch \u1ee9ng v\u00e0 t\u1ed5n th\u01b0\u01a1ng do axit d\u1ea1 d\u00e0y, pepsin v\u00e0 c\u00e1c ch\u1ea5t \u0111\u1ed9c h\u1ea1i kh\u00e1c g\u00e2y ra, th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh s\u1eeda ch\u1eefa v\u00e0 l\u00e0nh v\u1ebft th\u01b0\u01a1ng ni\u00eam m\u1ea1c d\u1ea1 d\u00e0y, h\u1ed7 tr\u1ee3 \u0111i\u1ec1u tr\u1ecb vi\u00eam d\u1ea1 d\u00e0y, lo\u00e9t d\u1ea1 d\u00e0y v\u00e0 c\u00e1c b\u1ec7nh li\u00ean quan kh\u00e1c.<\/p>\n

Th\u1ee9 hai, ion nh\u00f4m li\u00ean k\u1ebft v\u1edbi phosphat trong ru\u1ed9t t\u1ea1o th\u00e0nh nh\u00f4m phosphat kh\u00f4ng h\u00f2a tan, sau \u0111\u00f3 \u0111\u01b0\u1ee3c b\u00e0i ti\u1ebft qua ph\u00e2n. Do \u0111\u00f3, \u1edf b\u1ec7nh nh\u00e2n m\u1eafc ch\u1ee9ng ur\u00ea huy\u1ebft, vi\u1ec7c s\u1eed d\u1ee5ng m\u1ed9t l\u01b0\u1ee3ng l\u1edbn nh\u00f4m hydroxit c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m s\u1ef1 h\u1ea5p th\u1ee5 phosphat trong ru\u1ed9t, t\u1eeb \u0111\u00f3 l\u00e0m gi\u1ea3m t\u00ecnh tr\u1ea1ng nhi\u1ec5m toan.<\/p>\n

H\u01a1n n\u1eefa, nh\u00f4m hydroxit \u1edf d\u1ea1ng nano c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t mang thu\u1ed1c \u0111\u1ec3 bao b\u1ecdc thu\u1ed1c ho\u1eb7c kh\u00e1ng nguy\u00ean, c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng nh\u1eafm m\u1ee5c ti\u00eau c\u1ee7a thu\u1ed1c. Ngo\u00e0i ra, nh\u00f4m hydroxit th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m t\u00e1 d\u01b0\u1ee3c trong b\u00e0o ch\u1ebf thu\u1ed1c u\u1ed1ng v\u00e0 v\u1eafc-xin, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 an to\u00e0n c\u1ee7a thu\u1ed1c.<\/p>\n","protected":false},"excerpt":{"rendered":"

Nh\u00f4m hydroxit \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nhi\u1ec1u nh\u1ea5t nh\u1edd c\u00f4ng d\u1ee5ng l\u00e0m ch\u1ea5t ch\u1ed1ng ch\u00e1y, \u0111\u01b0\u1ee3c th\u00eam v\u00e0o c\u00e1c v\u1eadt li\u1ec7u n\u1ec1n polymer, n\u01a1i n\u00f3 th\u1ec3 hi\u1ec7n \u0111\u1eb7c t\u00ednh ch\u1ed1ng ch\u00e1y tuy\u1ec7t v\u1eddi.<\/p>\n","protected":false},"author":7,"featured_media":136599,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-136624","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghiep-tin-tuc-vi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/136624","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=136624"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/136624\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/136599"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=136624"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=136624"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=136624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}