Kedu ka esi eji sieve molecular 4A?Kedu ihe achọrọ maka gburugburu ebe ọ na-arụ ọrụ?Dị ka a porous ihe onwunwe, 4A molekụla sieve ọtụtụ ebe na-eji n'ọtụtụ ubi n'ihi microporous molekul sieve dị ka adsorption nkewa ihe, ion mgbanwe ihe na catalytic ihe.
Nke mbụ, ka anyị leba anya na mmalite nke sieve molecular 4A:
N'ihi na nha ya dị irè bụ 0.4nm, a na-akpọ ya 4A molecular sieve, nke nwere ike ịkwado ogige ndị dị ala dị ka mmiri, methanol, ethanol, carbon dioxide, ethylene, sulfur dioxide, hydrogen sulfide, na propylene.
- 1. Ọnụ ọgụgụ molekul nke usoro iji 4A molecular sieve
Ebe ọ bụ na nha ya dị mma bụ 0.4mm, ọ nweghị ike ịgbanye molecule ọ bụla (gụnyere propane) nke nwere dayameta karịrị 0.4mm, mana ọrụ mgbasa ozi ya na-ahọrọ maka mmiri dị elu karịa molekul ọ bụla ọzọ, ọ bụkwa otu n'ime ihe ndị a na-ejikarị eme ihe. sieve iche na ụlọ ọrụ.
- Mpaghara arụ ọrụ nke usoro ojiji nke sieve molecular 4A
1. Mgbe okpomọkụ dị 110 Celsius, ọ ga-ekwe omume ikpochapụ mmiri na nnukwu oghere, ma ọ gaghị ewepụ mmiri na pores nke molecular sieve.Ya mere, n'ime ụlọ nyocha, ọ nwere ike rụọ ọrụ ma kpoo ya site na ihicha n'ime ọkụ muffle.Okpomọkụ dị 350 Celsius, a na-akpọnwụ ya n'okpuru nrụgide nkịtị maka awa 8 (ọ bụrụ na enwere mgbapụta mgbapụta, enwere ike ịkpọ ya na 150 ° C maka awa 5).
2. A na-eme ka sieve molecular 4A na-arụ ọrụ dị jụụ ruo ihe dịka 200 ° C (ihe dị ka nkeji 2) na ikuku, ma ọ dị mkpa ka echekwara ya na desiccator ozugbo.
3. N'ebe a na-enye ohere, a ga-etinye ihe nchebe nitrogen akọrọ n'oge oyi na nchekwa, nke nwere ike igbochi ikuku mmiri dị n'ikuku nke ọma ọzọ.N'ihi na sieve molecular ochie mgbe ejiri ya mee ihe nwere ihe ndị na-emerụ emerụ, ọ bụghị naanị na a ga-arụ ọrụ ya na okpomọkụ nke 450 ° C, kamakwa mmiri vapor ma ọ bụ inert gas (nitrogen, wdg) kwesịrị iwebata iji dochie ihe ndị ọzọ na sieve molecular.
4. Zere mmanụ na mmiri mmiri mgbe ị na-eji ya, ma gbalịa izere kọntaktị kpọmkwem na mmanụ na mmiri mmiri.
Dị ka alkali metal aluminosilicate, 4A molecular sieve na-akwado ọtụtụ ndị ahịa na ihicha nke gas na mmiri mmiri, na nwekwara ike-eji maka refining na ọcha nke gas ma ọ bụ mmiri mmiri, dị ka mmịpụta nke argon.Ugbu a, ị ghọtara ihe kpachara anya maka ojiji ya?
Chọgharịa ihe ọmụma sieve molikula:
https://www.kelleychempacking.com/news/adsorption-performance-of-4a-molecular-sieve-for-h%e2%82%82s/
https://www.kelleychempacking.com/news/2-tips-to-extend-the-life-of-molecular-sieves/
https://www.kelleychempacking.com/news/korean-customer-inspected-the-production-schedule-of-80-tons-of-molecular-sieve/
Oge nzipu: Nov-04-2022