Boehmite Sɔhwɛ Nhyehyɛe a Ɛkɔ Akyiri

Boehmite, aluminum-aboɔden abo a ɛho hia no, wɔde di dwuma kɛse wɔ catalyst supports, lithium battery separator coatings, ne ceramics mu. Sɛnea ɛbɛyɛ na wɔahwɛ ahu sɛ ɛho tew, sɛnea ɛte sɛ ahwehwɛ, ne nneɛma a ɛwɔ mu no hyia nnwuma gyinapɛn ahorow no, ɛho hia sɛ wɔyɛ nhyehyɛe a wɔde sɔ hwɛ ma wɔhwɛ sɛnea nneɛma te. Nea edidi so yi ne anammɔn atitiriw ne mfiridwuma mu nsɛntitiriw a wɔde yɛ boehmite sɔhwɛ.

I. Nhwɛsode a Wɔde Di Kan Yɛ Aduru

Ɛsɛ sɛ wodi kan yɛ Boehmite nhwɛsode ahorow ho adwuma ansa na wɔasɔ ahwɛ na ama wɔahwɛ ahu sɛ nea efi nhwehwɛmu mu aba no yɛ nokware. Nea edi kan no, fa grinder yam nhwɛsode a wɔannoa no ma ɛnyɛ fɛ a ɛyɛ 200 mesh anaa nea eye sen saa na fa fononoo a ɛyɛ digrii 105 -110 digrii mu nnɔnhwerew 2 na ama nsu a wɔagye no afi hɔ. Sɛ sɔhwɛ no fa akuw a ɛyɛ adwuma wɔ soro anaasɛ efĩ a ɛwɔ abɔde mu ho a, ɛho hia sɛ wɔde ethanol a nsu nnim hohoro ho bio na wɔde vacuum drying na amma solvent a aka no anhaw nhwehwɛmu a edi hɔ no.

II. Honam fam Agyapade Ho Sɔhwɛ
1.Particle Size Distribution: Wɔde laser particle size analyzer (te sɛ Malvern Mastersizer) di dwuma de susuw particle size range a boehmite asinasin no wɔ. Wɔtaa di D50 (median diameter) no so wɔ 0.5 ne 5 μm ntam de di ahwehwɛde ahorow a ɛwɔ dwumadie tebea ahodoɔ mu no ho dwuma.

2.Specific Surface Area: Wɔde BET nitrogen adsorption kwan (te sɛ Micromeritics ASAP 2020) na ɛsusu asase pɔtee no. Boehmite a ɛho tew kɛse-taa nya ne soro beae pɔtee a ɛyɛ 5 kosi 20 m2/g, a ɛka catalytic dwumadi ne coating uniformity tẽẽ.

3.Crystal Morphology: Wɔde scanning electron microscopy (SEM) di dwuma de hwɛ sɛnea nneɛma nketenkete no te. Boehmite taa da flake-te sɛ anaasɛ fibrous nhyehyɛe adi. Morphological consistency yɛ ade titiriw a ɛkyerɛ sɛnea wɔde di dwuma a ɛkorɔn-awiei.

III. Nnuru a Wɔde Yɛ Nneɛma ne Ahotew Ho Nhwehwɛmu
1.Chemical Composition: Wɔde X-ray fluorescence spectroscopy (XRF) anaa inductively coupled plasma optical emission spectroscopy (ICP-OES) na ɛyɛ Al2O3 mu dodow nhwehwɛmu. Industrial-grade boehmite hwehwɛ sɛ Al2O3 ahotew yɛ Kɛseɛ anaasɛ ɛyɛ pɛ 95%, berɛ a high-ahotew boehmite hwehwɛ sɛ ɛho tew Kɛseɛ anaa ɛne 99% yɛ pɛ.

2.Efĩ a Wohu: Wɔde ICP-MS anaa atom absorption spectroscopy (AAS) di dwuma de kyerɛ efĩ nketenkete te sɛ SiO2, Fe2O3, ne Na2O. Ɛsɛ sɛ wɔto nea ɛwɔ mu no ano hye katee na wɔakwati sɛ ɛbɛka nneɛma ahorow.

IV. Crystal Structure Su a Wɔde Kyerɛkyerɛ
1.X-ray Diffraction (XRD): Wɔde Bragg diffraction peaks di dwuma de si -AlOOH ahwehwɛ kwan a ɛwɔ boehmite no so dua na wɔbu ahwehwɛ dodow a ɛwɔ mu no ho akontaa. Standard boehmite da su diffraction peaks adi wɔ 2θ kwan a ɛyɛ digrii 14 kosi digrii 35 . Efĩ a ɛwɔ hɔ (te sɛ -Al2O3) betumi akyerɛ sɛ wɔahyew boro-.

2.Thermogravimetric Analysis (TGA): Ɔhyew a ɛkɔ 1000℃wɔ mframa wim na wɔhwɛ sɛnea obi mu duru so tew curve. Boehmite taa porɔw yɛ -Al2O3 wɔ digrii 300 ne digrii 500 ntam . Wobetumi de sɛnea obi mu duru so tew no adi dwuma de ahwɛ sɛ hydroxyl a ɛwɔ mu no yɛ nokware anaa.

V. Dwumadi mu Sɔhwɛ (Wɔpɛ) .

Wɔ dwumadie pɔtee bi mu no, ebia ɛho bɛhia nso sɛ wɔsusu pH (mpɛn pii no 7-9), ngo a wɔtwetwe ho sɔhwɛ (de hwɛ sɛnea ɛtumi petepete), anaa porosity nhwehwɛmu (te sɛ mercury intrusion porosimetry) na ama wɔadi ahwehwɛdeɛ pɔtee a ɛfa catalyst supports anaa battery nneɛma ho no ho dwuma.

Sɛ yɛbɔ no mua a, boehmite sɔhwɛ nhyehyɛe no hwehwɛ sɛ wɔyɛ nhwehwɛmu a ɛwɔ afã horow pii a ɛka honam fam, nnuru, ne ahwehwɛ nhwehwɛmu bom de hwɛ hu sɛ adwumayɛ a ɛyɛ den na wotumi de ho to so na ɛma awerɛhyem a ɛyɛ papa ma dwumadie a ɛwɔ nsuo ase.