Cellulose, iyo inonyanya kuwanda polymer pasi pano, inoumba chikamu chakakosha cheBiomass uye dzakasiyana siyana maindasitiri. Kuvimbika kwayo kwakasimba kwemidziyo kunomarara nekuparadzwa kwayo, kwakakosha pakushandisa zvakadai seBiofuli kugadzirwa uye marara marara. Hydrogen Peroxide (H2O2) yakabuda semunun'una angangoita cellulose kupaza nekuda kwesimba rayo rakarongeka uye oxidizing zvivakwa.
Nhungamidzo:
Cellulose, polysaccharide yakaumbwa neyechikamu chakabatanidzwa neGlucose zvikamu zvakabatana neGlucese zvisungo zveGlucese Kuwanda kwaro muBiomass kunoita kuti ive inokwezva sosi yeindasitiri akasiyana-siyana, kusanganisira pepa uye pulp, zvinyorwa, uye bioenergy. Nekudaro, iyo yakasimba hydrogen yekubatanidza network mukati memaCellulose Filbrils inopa iyo inodzivirira kuti isarambe kupaza mashari mazhinji, zvinetso zvekushandiswa kwayo uye kudzokorodza.
Nzira dzechinyakare dzeCellulose Dissolution inosanganisira hutsinye, sekusanzwisisika acids Acids kana ionic zvinwiwa, zvinowanzobatanidzwa zvine chekuita nemamiriro ekunze uye zvakakwirira simba rekushandisa. Mukupesana, hydrogen peroxide inopa imwe inosimudzira imwe nzira yekukonzerwa neyakaoma oxidizing chisikwa uye zvinogona kune zvakatipoteredzwa zvine ushamwari Cellulose kugadzirisa. Iri bepa rinodedera mumuchina pasi pehydrogen peroxide-peretired cell volose kupaza uye kuongorora kushanda kwayo uye zvinoshanda zvinoshanda.
Mechanisms of cellulose kupazwa ne hydrogen peroxide:
Kupararira kweCellulose neHydrogen Peroxide inosanganisira maitiro akaomarara, kunyanya oxidative cleavage yezvisungo zveGlycsics uye kukanganisa kweiyo intermolecular hydrogen kusungwa. Maitiro acho anowanzoenderera kuburikidza nematanho anotevera:
Oxidation yeHydroxyl Mapoka: Hydrogen Peroxide Inosangana neCellulose Hydroxyl Mapoka, Ah) Via Fenton kana Fenton-Sekuita Kubva kuHupo hweSturity Metalition Screen Aya ma radicals anorwisa zvisungo zveGlycsic, kutanga chiratidzo cheketeni uye kugadzira zvipenga zvinopfupikisira celler cell.
Kuvhiringidza kweHydrogen Kubatanidza: Hydroxyl radicals inokanganisawo hydrogen yekubatanidza network pakati chairo cellulose they
Kuumbwa kweshoko rinonyoroveswa: Iyo oxidative degradation ye cellucose inoguma nekuumbwa kwemvura-inonyungudika, senge carboxyylic acids, aldehydes, uye ketones. Aya maReivatives anobatsira mukunyungudika maitiro nekuwedzera kwekugadzirisa uye kuderedza viscosity.
Delymerization uye kupatsanurana: Kuwedzera Oxidation uye kusagadzikana kwekuita kunounza depilymerization yemaketani muchinguvana uye pakupedzisira kune mamwe manyorerwo jegi kana zvimwe zvigadzirwa zvehuremu.
Zvinhu zvinokanganisa hydrogen peroxide-peredated cellulose kuputsika:
Kubudirira kweCellulose Kupararira uchishandisa hydrogen peroxide inokurudzirwa nezvinhu zvakasiyana, kusanganisira:
Kusvinwa kwehydrogen peroxide: Yakakwirira yepamusoro ye hydrogen peroxide kazhinji inoguma nekukurumidza kudzorera mitengo uye kuwedzera kwakanyanya cell kuburitsa. Nekudaro, zvakanyanyisa kutarisisa zvakanyanya zvinogona kutungamira kune zvigadziko zvematanho kana zvisina kufanira ne-zvigadzirwa.
ph uye tembiricha: iyo pH yekuita svikiro kunokanganisa chizvarwa che hydroxyl radicals uye kugadzikana kwemheremalose derivatives. Mamiriro ezvinhu emamiriro ekunze (pH 3-5) anowanzo sarudza kuwedzera cellulose solubility pasina kusvibiswa kwakakura. Pamusoro pezvo, tembiricha inokanganisa maitiro ekuita, nekudziya kwakanyanya kunowanzo kukurudzira maitiro ekunyungudika.
Kuvapo kweCatalyStss: Shanduko yesimbi ion, senge simbi kana yemhangura, inogona kuunganidza kushomeka kwehydrogen peroxide uye kusimudzira kuumbwa kwehydroxyl radicals. Nekudaro, sarudzo yeCatireyst uye Yayo yekumanikidza inofanirwa kuve yakanyatso kugadziriswa kuti ideredze maitiro ezvekuita uye kuve nechokwadi chechigadzirwa mhando.
Cellulose Morphology uye Crystallinity: Kuwanikwa kwemaketani cellucose kuHydrogen peroxide uye hydroxyl radicals inokurudzirwa neiyo morphology uye crystalline chimiro. Amorphous matunhu anokwenenzverwa kune kusvibiswa kupfuura zvakanyanyisa crystalline nzvimbo, inokoshesa kunyepedzera kana maitiro ekugadziridza kuti uvandudze kuwanikwa.
Zvakanakira uye zvikumbiro zve hydrogen peroxide mu cellulose kuputsika:
Hydrogen Peroxide inopa akati wandei zvakanakira cellulose kushungurudzika uchienzaniswa nenzira dzomugariro:
Kuenderana kwezvakatipoteredza Izvi zvinoshamwaridzana zvine hushamwari hunoita kuti zviite zvakakodzera kuti zvigadziriswe mheremalose kugadziriswa uye marara ekugadzirisa.
Mamiriro ezvinhu munyoro: Hydrogen Peroxide-Mederated Cellulose Cell
Kusarudza oxidation: Iyo oxidative cleavage yeGlycosic zvisungo neHydrogen peroxide inogona kudzorwa kune imwe nhanho yekucheka cellout
Zvinoshandiswa zvinoshandiswa: Iyo Solule Cellulose Denivatives kubva kuHydrogen yePeroxic
Zvinonetsa uye Nzira Dzamangwana:
Pasinei nehunhu hwunowedzera, hydrogen peroxide-peroxide cellulose kuputsika kwakatarisana nematambudziko uye nzvimbo dzekuvandudza:
Kusarudzwa uye goho: Kuwana yakakwirira goods yekunyaradza mheremalose mherenders neye madiki mativi anoramba achiita dambudziko, kunyanya kune akaomarara biomass yekudya ine lignsin uye hemicellulose.
Kuyera-kumusoro uye kugadzirisa uplation: Kuisa Hydrogen peroxy-yakavakirwa Cellulose maitiro ekunyatsofungisisa
CATALYSTUDE: Dhizaini yehunyanzvi hwekutengesa hydrogen peroxide
Kularoriation of-zvigadzirwa: Maitiro ezvivakwa zve-zvigadzirwa zvakagadzirwa panguva yehydrogen perods cell
Hydrogen peroxide inobata chivimbo chakakosha segirini uye zvakawandisa zvinopesana nekuparadzaniswa kwemasekuru Pasinei nematambudziko anoenderera mberi, akaenderera mberi nekuedza kwekutsvaga kwakanangana nemashandisirwo emuchina, uye kuongorora zvinyorwa zvechiratidziro zvichawedzera kusimbisa kwekutadza uye kusimbiswa kwehydrogen peroxide-based maitiro eCellulose vuzolose.
Kutumira Nguva: Kubvumbi-10-2020