Vanadium Pentoxide Powder 99.5% | V2O5 For Catalysts & VRFB
Ferro Vanadium 40% Lump for Metallurgical Use is an industrial ferroalloy product used as a vanadium source in steelmaking and alloy production, supplied in standard lump sizes with export packing options.
Vanadium Pentoxide Powder 99.5% for Chemical Catalysts & Energy Storage
Vanadium Pentoxide Powder 99.5%, also known as high-purity V₂O₅ powder, is used in chemical catalyst preparation, sulfuric acid production, vanadium redox flow battery electrolyte, pigments, ceramics and other high-value chemical applications.
Unlike metallurgical V₂O₅ flake, which is often selected for smelting and ferrovanadium production, high-purity V₂O₅ powder is preferred when the process requires higher chemical reactivity, faster dissolution, better dispersion and lower impurity input.
OSHA identifies vanadium pentoxide under CAS No. 1314-62-1 with the formula V₂O₅, and NIOSH describes it as a yellow-orange powder or dark-gray, odorless flakes dispersed in air. This confirms that V₂O₅ exists in both powder and flake forms, but the two forms behave differently in industrial handling and reaction processes. Powder V₂O₅ has higher exposure risk during handling, but it also offers better contact area for wet chemical reactions, catalyst preparation and electrolyte processing when dust control is properly managed.
Technical Specifications
The following specification is Zhen An's reference quality control range. Final data should be confirmed by batch COA or independent inspection.
| Item | Guarantee | Typical Range |
|---|---|---|
| V₂O₅ Content | ≥99.5% | 99.6–99.8% |
| Iron Fe | ≤0.05% | Around 0.01% |
| Phosphorus P | ≤0.01% | Around 0.005% |
| Sulfur S | ≤0.01% | Around 0.003% |
| Na + K | ≤0.10% | Around 0.04% |
| Moisture | ≤0.50% | Customizable |
| Form | Fine Powder | 100–325 mesh or customized |
We accept third-party inspection before shipment, including SGS, BV, Intertek or other internationally recognized inspection agencies. If buyers require independent laboratory testing, samples can also be tested by an ISO/IEC 17025-accredited laboratory upon request. ISO/IEC 17025 is the international standard covering competence requirements for testing and calibration laboratories.
How High Purity V2O5 Powder 99.5% Improves Catalyst and Electrolyte Production
1. Catalyst Activity Loss Caused by Impurities
In sulfuric acid catalyst preparation and other oxidation catalyst systems, impurity control is critical. Britannica notes that vanadium compounds, including pentoxide and certain vanadates, are used as catalysts in the contact process for manufacturing sulfuric acid; related technical literature also describes V₂O₅-based catalysts as important materials for SO₂-to-SO₃ oxidation.
For buyers, this means impurity control is not just a lab number. Lower Fe, P, S and alkali metal levels help reduce the risk of unwanted side effects in catalyst formulation and support more stable catalyst performance.
2. Slow Dissolution in VRFB Electrolyte Preparation
Vanadium redox flow battery electrolyte production often involves dissolving vanadium compounds and adjusting vanadium valence states. A U.S. Department of Energy OSTI report describes a method for synthesizing V⁴⁺ electrolyte feedstock for all-vanadium redox flow batteries by dissolving V₂O₅ in aqueous hydrochloric and sulfuric acids and then using glycerol as a reducing agent.
For VRFB electrolyte producers, fine V₂O₅ powder can be more suitable than flake when the process requires faster wet-chemical reaction and better dispersion. However, dissolution speed depends on acid system, temperature, agitation, particle size and reduction route, so plant testing is still necessary.
3. Powder Caking and Feeding Difficulty
Fine powder improves reaction contact, but it also creates handling challenges. Moisture absorption and poor packing may cause caking, flowability problems and inconsistent feeding.
Zhen An uses moisture-resistant packing options to help keep the powder dry and free-flowing during storage and transport. For automated feeding systems, buyers should confirm particle size, moisture limit and packing method before ordering.
Industrial Applications
Sulfuric Acid Catalyst Preparation
Vanadium pentoxide is widely associated with catalyst systems used in sulfuric acid production. In this application, high-purity V₂O₅ powder helps reduce impurity input during catalyst preparation and supports more consistent formulation control.
Vanadium Redox Flow Battery Electrolyte
V₂O₅ powder can be used as a vanadium source for electrolyte preparation in vanadium redox flow battery systems. Powder form is suitable for wet chemical processing where dissolution, reduction and valence adjustment are required.
Pigments and Ceramics
High-purity V₂O₅ powder can be used in selected pigment, glaze and ceramic formulations where color stability, chemical purity and thermal behavior are important. Buyers should confirm particle size and impurity limits according to the final formulation.
Chemical Oxidation and Specialty Chemicals
Vanadium compounds are used in various catalytic and chemical processes. For specialty chemical applications, 99.5% V₂O₅ powder is more suitable than lower-purity metallurgical material when the process is sensitive to Fe, P, S or alkali metal contamination.
Packing Options
| Packing Type | Suitable For |
|---|---|
| 25kg sealed bags | Small batch orders |
| 50kg iron drums | Safer storage and transport |
| 250kg iron drums | Industrial supply |
| Vacuum double-layer packing | Moisture-sensitive applications |
| Customized packing | Based on buyer requirements |
For high-purity powder, moisture-proof packing is especially important. It helps reduce caking risk and keeps the material suitable for catalyst preparation, electrolyte production and automated feeding.
FAQ
Q:What makes 99.5% V2O5 powder suitable for sulfuric acid catalysts?
A:99.5% V₂O₅ powder is suitable for catalyst preparation because it offers high purity, fine particle form and low impurity input. Since vanadium compounds are used in catalyst systems for sulfuric acid production, controlling Fe, P, S and alkali metals helps reduce formulation risk and supports stable catalyst preparation.
Q:Is this grade compatible with vanadium redox flow battery requirements?
A:V₂O₅ powder can be used as a vanadium source for VRFB electrolyte preparation, but compatibility depends on electrolyte route, impurity limit, particle size and reduction process. Batch COA and application testing are recommended before bulk use.
Q:What is the average particle size of the powder?
A:Common sizes include 100 mesh, 200 mesh and 325 mesh. Customized particle size distribution can also be supplied according to catalyst, electrolyte, pigment or ceramic production requirements.
Q:What is the difference between V2O5 powder and V2O5 flake?
A:V₂O₅ powder is better for catalyst synthesis, wet chemical dissolution, electrolyte preparation and ceramic formulations. V₂O₅ flake is usually more suitable for ferrovanadium smelting and aluminothermic reduction because it provides better bulk handling and lower dust loss risk.
Q:Can you provide third-party inspection?
A:Yes. We accept third-party inspection before shipment, including SGS, BV, Intertek or other internationally recognized inspection agencies. ISO/IEC 17025-accredited laboratory testing can also be arranged upon request.
Q:Is Vanadium Pentoxide Powder dangerous goods?
A:Vanadium pentoxide should be handled according to the latest SDS and applicable dangerous goods regulations. NIOSH lists vanadium dust with formula V₂O₅ and DOT ID 2862, so sealed packing, ventilation and dust-control measures are important during handling and transport.
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