Lisefa tsa molek'huleli sebelisoa haholo indastering ea lik'hemik'hale le tsa petrochemical bakeng sa lits'ebetso tse fapaneng tsa karohano le tlhoekiso. E 'ngoe ea litšebeliso tsa bona tsa bohlokoa ke ho hloekisa khase ea haedrojene. Hydrogen e sebelisoa haholo joalo ka phepelo lits'ebetsong tse fapaneng tsa indasteri, joalo ka tlhahiso ea ammonia, methanol le lik'hemik'hale tse ling. Leha ho le joalo, haedrojene e hlahisoang ka mekhoa e sa tšoaneng hase kamehla e hloekileng ka ho lekaneng hore e ka sebelisoa, ’me e lokela ho hloekisoa e le hore e tlose litšila tse kang metsi, carbon dioxide le likhase tse ling. Li-sieve tsa limolek'hule li sebetsa hantle haholo ho tloseng litšila tsena melapong ea khase ea haedrojene.

Li-sieve tsa limolek'hule ke lisebelisoa tsa porous tse nang le bokhoni ba ho khetha limolek'hule ho latela boholo le sebōpeho sa tsona. Li na le moralo oa li-cavities tse hokahaneng kapa li-pores tse boholo bo lekanang le sebopeho, tse li lumellang ho khetha limolek'hule tse kenang ka har'a likoti tsena. Boholo ba li-cavities bo ka laoloa nakong ea ho qaptjoa ha sieve ea molek'hule, e leng se etsang hore ho khonehe ho lokisa thepa ea bona bakeng sa lits'ebetso tse khethehileng.

Tabeng ea tlhoekiso ea haedrojene, li-sieve tsa molek'hule li sebelisetsoa ho khetha metsi le litšila tse ling tse tsoang khase ea hydrogen. Sieve ea molek'hule e khahlisa limolek'hule tsa metsi le litšila tse ling, ha e ntse e lumella limolek'hule tsa hydrogen hore li fete. Litšila tse adsorbed li ka hlakoloa ka har'a sieve ea molek'hule ka ho e futhumatsa kapa ka ho e hloekisa ka phallo ea khase.

Tse sebelisoang ka ho fetisisasieve ea molek'hulebakeng sa tlhoekiso ea haedrojene ke mofuta oa zeolite o bitsoang 3A zeolite. Zeolite ena e na le boholo ba pore ea 3 angstroms, e lumellang hore e khetholle metsi le litšila tse ling tse nang le boholo ba molek'hule ho feta hydrogen. E boetse e khetha haholo bakeng sa metsi, e leng se etsang hore e atlehe haholo ho tlosa metsi ho tloha molapong oa hydrogen. Mefuta e meng ea li-zeolite, joalo ka 4A le 5A zeolite, le tsona li ka sebelisoa bakeng sa tlhoekiso ea haedrojene, empa ha li khetholle metsi 'me li ka hloka mocheso o phahameng kapa likhatello bakeng sa desorption.

Qetellong, li-sieve tsa limolek'hule li sebetsa haholo ho hloekisa khase ea hydrogen. Li sebelisoa haholo indastering ea lik'hemik'hale le tsa petrochemical bakeng sa tlhahiso ea khase ea hydrogen e hloekileng haholo bakeng sa lits'ebetso tse fapaneng. 3A zeolite ke sieve ea limolek'hule e sebelisoang haholo bakeng sa tlhoekiso ea haedrojene, empa mefuta e meng ea zeolite le eona e ka sebelisoa ho latela litlhoko tse ikhethileng tsa kopo.

Ntle le li-zeolite, mefuta e meng ea li-sieve tsa molek'hule, tse kang activated carbon le silica gel, le tsona li ka sebelisoa bakeng sa tlhoekiso ea haedrojene. Lisebelisoa tsena li na le sebaka se phahameng le molumo o phahameng oa pore, e leng se etsang hore li atlehe haholo ho khabisong litšila tse tsoang melapong ea khase. Leha ho le joalo, ha li khetholle ho feta zeolite mme li ka hloka mocheso o phahameng kapa likhatello bakeng sa nchafatso.

Ntle le ho hloekisa hydrogen,li-sieve tsa molek'huleli boetse li sebelisoa lits'ebetsong tse ling tsa karohano ea khase le ho hloekisa. Li sebelisetsoa ho tlosa mongobo le litšila moeeng, naetrojene le melapo e meng ea khase. Li boetse li sebelisetsoa ho arola likhase ho latela boholo ba limolek'hule tsa tsona, joalo ka karohano ea oksijene le naetrojene moeeng, le karohano ea hydrocarbons ho khase ea tlhaho.

Ka kakaretso, li-sieve tsa limolek'hule ke lisebelisoa tse feto-fetohang tse nang le ts'ebeliso e fapaneng indastering ea lik'hemik'hale le tsa petrochemical. Li bohlokoa bakeng sa tlhahiso ea likhase tse hloekileng haholo, 'me li fana ka melemo e mengata ho feta mekhoa e tloaelehileng ea karohano, e kang tšebeliso e tlaase ea matla, khetho e phahameng, le boiketlo ba ts'ebetso. Ka tlhoko e ntseng e eketseha ea likhase tse hloekileng lits'ebetsong tse fapaneng tsa indasteri, ts'ebeliso ea li-molecular sieves e lebelletsoe ho hola nakong e tlang.