INDUSTRY COMPONENT

Active Catalytic Material

Active catalytic material is the core reactive substance in SCR catalysts that facilitates nitrogen oxide reduction through selective catalytic reduction.

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Component Specifications

Definition
Active catalytic material refers to the chemically active component within Selective Catalytic Reduction (SCR) catalysts that enables the conversion of nitrogen oxides (NOx) into nitrogen (N2) and water (H2O) through redox reactions. These materials typically consist of metal oxides or zeolites that provide active sites for ammonia adsorption and NOx reduction at specific temperature ranges (typically 300-400°C).
Working Principle
The active catalytic material operates through adsorption and surface reaction mechanisms. Ammonia (NH3) adsorbs onto active sites, where it reacts with NOx gases (primarily NO and NO2) to form nitrogen and water vapor. The material provides optimal surface area and pore structure for gas diffusion while maintaining thermal stability and resistance to poisoning from sulfur compounds or particulates.
Materials
Typically composed of vanadium pentoxide (V2O5) supported on titanium dioxide (TiO2) with tungsten trioxide (WO3) or molybdenum trioxide (MoO3) as promoters. Alternative formulations include zeolite-based materials (such as Cu- or Fe-exchanged zeolites) for higher temperature applications. Material purity requirements: V2O5 >98%, TiO2 anatase phase >95%, with specific surface area 50-100 m²/g.
Technical Parameters
  • Pore Volume 0.2-0.4 cm³/g
  • Ammonia Slip <10 ppm
  • Surface Area 50-100 m²/g
  • Promoter Content 5-10 wt% WO3
  • Support Material TiO2 (anatase)
  • Thermal Stability Up to 600°C
  • Average Pore Diameter 10-20 nm
  • Active Component Loading 1-5 wt% V2O5
  • NOx Conversion Efficiency >90%
  • Operating Temperature Range 300-400°C
Standards
ISO 8178, ISO 16183, DIN 70070, DIN EN 267

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Active Catalytic Material.

SCR catalyst material active catalytic component NOx reduction catalyst vanadium-based catalyst zeolite catalyst emission control material diesel exhaust treatment Active Catalytic Material Active Catalytic Material in Chemical Manufacturing

Parent Products

This component is used in the following industrial products

Selective Catalytic Reduction (SCR) Catalyst

A catalytic component that converts nitrogen oxides (NOx) into nitrogen and water using a reductant like ammonia or urea.

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Engineering Analysis

Risks & Mitigation
  • Thermal degradation above 600°C
  • Sulfur poisoning from fuel contaminants
  • Physical fouling by particulate matter
  • Chemical poisoning by alkali metals
  • Ammonia slip exceeding regulatory limits
FMEA Triads
Trigger: Exposure to temperatures above 600°C
Failure: Thermal sintering reduces active surface area
Mitigation: Implement temperature monitoring and control systems; use thermal-stable support materials
Trigger: Sulfur compounds in exhaust gases
Failure: Formation of ammonium sulfate blocks active sites
Mitigation: Use low-sulfur fuels; implement periodic regeneration cycles
Trigger: Particulate accumulation
Failure: Physical blockage of pores reduces gas diffusion
Mitigation: Install upstream particulate filters; schedule regular maintenance cleaning

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±5% on active component loading; ±10% on conversion efficiency at specified conditions
Test Method
ISO 8178 for engine testing; laboratory testing using synthetic gas mixtures with FTIR analysis; accelerated aging tests per ISO 16183

Buyer Feedback

★★★★☆ 4.7 / 5.0 (15 reviews)

"Testing the Active Catalytic Material now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Chemical Manufacturing sector, I confirm this Active Catalytic Material meets all ISO standards."

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Frequently Asked Questions

What is the primary function of active catalytic material in SCR systems?

The active catalytic material facilitates the chemical reduction of nitrogen oxides (NOx) to nitrogen and water using ammonia as a reducing agent, enabling compliance with emission regulations.

How does temperature affect active catalytic material performance?

Optimal performance occurs between 300-400°C. Below this range, reaction kinetics slow; above this range, thermal degradation and ammonia oxidation may occur, reducing efficiency.

What are common deactivation mechanisms for active catalytic materials?

Common deactivation includes poisoning by sulfur compounds, fouling by particulate matter, thermal sintering at high temperatures, and chemical poisoning from alkali metals or phosphorus.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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