Gold 1% on titanium dioxide extrudates (AUROlite™ Au/TiO₂)

1. Product Introduction

Gold 1% on Titanium Dioxide Extrudates (AUROlite™ Au/TiO₂) is a supported gold heterogeneous catalyst consisting of finely dispersed gold particles deposited on a titanium dioxide support. The material is supplied as dark purple-to-gray extrudates and is designed for catalytic research involving gold-based oxidation and related reactions.

The catalyst contains approximately 1 wt% gold, with a specified gold loading of 1 wt% ± 0.1%. Titanium dioxide serves as the catalyst support, providing a solid surface for the dispersion of gold nanoparticles. The average gold crystallite size is approximately 2–3 nm according to the supplier's technical information.

Unlike bulk gold, supported gold catalysts can exhibit catalytic activity associated with the interaction between nanoscale gold particles and the oxide support. The Au–TiO₂ interface, gold dispersion, and support properties can influence catalytic performance.

AUROlite™ Au/TiO₂ is relevant to research in heterogeneous catalysis, selective oxidation, environmental catalysis, and catalyst structure–activity relationships. Its extrudate form also makes it suitable for research evaluating supported catalysts in fixed-bed and other solid-catalyst configurations.

CAS clarification: CAS 7440-57-5 identifies elemental gold, not the complete Au/TiO₂ supported catalyst. Titanium dioxide has CAS 13463-67-7. The product should therefore be described as a supported catalyst rather than a pure gold compound.

2. Chemical Properties & Reactivity

2.1 Supported Catalyst Structure

Gold is dispersed on a titanium dioxide support rather than present as a bulk metallic material. The supplier reports an average gold crystallite size of approximately 2–3 nm. The catalytic properties are associated with the dispersed gold phase and its interaction with the TiO₂ surface.

2.2 Catalytic Activity

Supported gold catalysts are investigated in oxidation reactions involving small molecules and organic substrates. Depending on the substrate and reaction environment, Au–TiO₂ systems may contribute to catalytic oxidation pathways involving oxygen activation and surface-mediated transformations.

2.3 Thermal Stability

The structure and catalytic activity of Au/TiO₂ materials can be affected by elevated temperatures. Gold particle growth and changes in the titanium dioxide crystal phase may alter the catalyst's active surface and performance. Thermal stability should therefore be evaluated under the intended research conditions rather than assumed from the nominal gold loading.

3. Key Research Applications

3.1 Catalytic Oxidation of Carbon Monoxide

Au/TiO₂ is relevant to heterogeneous catalysis research involving carbon monoxide oxidation.

Applications include:

• Carbon monoxide oxidation studies

• Investigation of supported gold active sites

• Evaluation of gold–oxide support interactions

• Research on low-temperature oxidation catalysts

• Catalyst structure–activity relationship studies

Gold nanoparticles supported on metal oxides are widely investigated for their activity in CO oxidation. This catalyst provides a defined Au/TiO₂ material for comparative research.

3.2 Selective Oxidation of Organic Compounds

Supported gold catalysts are used in research on the selective oxidation of organic molecules, including alcohols and aldehydes.

Applications include:

• Alcohol oxidation research

• Aldehyde oxidation studies

• Selective oxidation of organic substrates

• Investigation of oxygen-mediated catalytic processes

• Development of heterogeneous oxidation catalysts

The reported applications of AUROlite™ Au/TiO₂ include oxidation research involving aldehydes, alkenes, and ethanol. Actual conversion and selectivity depend on the reaction system and experimental conditions.

3.3 Environmental and Energy Catalysis

Gold supported on titanium dioxide is relevant to research on catalytic processes involving environmentally significant molecules and energy-related chemical transformations.

Applications include:

• Catalytic conversion of carbon monoxide

• Research on methane oxidation

• Development of oxide-supported metal catalysts

• Investigation of catalyst stability under reaction conditions

• Environmental catalytic-material evaluation

These studies support the development and evaluation of heterogeneous catalysts for environmental and energy-related applications.

3.4 Heterogeneous Catalyst and Reactor Research

The extrudate form makes this material relevant to research on solid-catalyst handling and reactor configurations.

Applications include:

• Fixed-bed catalyst evaluation

• Supported catalyst screening

• Catalyst loading and packing studies

• Comparison of extrudate catalyst formulations

• Investigation of catalyst deactivation and regeneration

The extrudate geometry provides a practical format for research involving solid catalyst beds. Reactor performance remains dependent on particle dimensions, flow conditions, and reaction design.

4. Advantages

1. Defined Gold Loading
Contains approximately 1 wt% gold, with a specified loading of 1 wt% ± 0.1%.

2. Nanoscale Gold Crystallites
Supplier-reported average gold crystallite size is approximately 2–3 nm.

3. Titanium Dioxide Support
Provides an oxide-supported platform for investigating gold-based heterogeneous catalysis.

4. Extrudate Form
Supplied as solid extrudates suitable for catalyst-bed research.

5. Oxidation Catalysis Applications
Relevant to research involving carbon monoxide, aldehydes, alkenes, methane, and ethanol oxidation.

6. Catalyst Interface Research
Supports investigations into interactions between gold nanoparticles and metal oxide surfaces.

7. Defined Physical Specifications
Supplier information includes gold loading, support composition, extrudate dimensions, and bulk density.

5. Storage & Handling

• Storage Temperature: Store cold according to the supplier's recommendations.

• Light Protection: Keep the material protected from direct sunlight and store in a dark environment.

• Container: Keep tightly closed in its original container.

• Exposure Control: Open the container only when the material is required for use.

• Handling: Avoid generating or inhaling dust. Wear appropriate laboratory gloves, protective clothing, and eye protection.

• Catalyst Handling: Prevent contamination from other catalytic materials and incompatible substances.

• Waste Disposal: Collect used catalyst and contaminated materials for disposal in accordance with applicable regulations and institutional procedures.

Consult the current supplier SDS and product-specific documentation before use. The supplier's handling instructions specifically recommend cold, dark storage and opening the container only before use.

6. Research Areas

1. Heterogeneous Catalysis
Research on solid catalysts, supported metal nanoparticles, and surface-mediated catalytic reactions.

2. Environmental Catalysis
Studies of catalytic conversion of carbon monoxide and other environmentally relevant molecules.

3. Oxidation Catalysis
Investigation of selective oxidation reactions involving organic substrates and oxygen.

4. Nanomaterials Research
Research on gold nanoparticles, particle dispersion, and metal–oxide interfaces.

5. Surface Chemistry
Investigation of interactions between gold active sites and titanium dioxide surfaces.

6. Chemical Reaction Engineering
Evaluation of extruded catalysts in fixed-bed and other heterogeneous reactor configurations.

7. Catalyst Stability Research
Studies of particle growth, thermal deactivation, and changes in supported catalyst structure.

1. What is Gold 1% on Titanium Dioxide Extrudates (AUROlite™ Au/TiO₂)?
It is a supported heterogeneous catalyst containing approximately 1 wt% gold dispersed on a titanium dioxide support.

2. What is the CAS number of AUROlite™ Au/TiO₂?
CAS 7440-57-5 identifies the gold component. Titanium dioxide has CAS 13463-67-7. The complete supported catalyst is a multicomponent material rather than a single molecular compound.

3. What is the gold loading of this catalyst?
The specified gold loading is 1 wt% ± 0.1%.

4. What is the average gold crystallite size?
The supplier reports an average gold crystallite size of approximately 2–3 nm.

5. What is the physical form of this product?
It is supplied as dark purple-to-gray extrudates, approximately 1.5 mm in diameter and 5 mm in average length.

6. What is the role of titanium dioxide in this catalyst?
Titanium dioxide acts as the support material, providing a surface for gold dispersion and influencing the catalyst's interfacial properties.

7. What reactions is AUROlite™ Au/TiO₂ used to investigate?
It is relevant to catalytic oxidation research involving carbon monoxide, aldehydes, alkenes, methane, and ethanol.

8. Is AUROlite™ Au/TiO₂ suitable for fixed-bed catalyst research?
Its extrudate form makes it suitable for research involving packed catalyst beds and heterogeneous reactor configurations. Actual suitability depends on reactor design and operating conditions.

9. How should AUROlite™ Au/TiO₂ be stored?
Store the material cold, in a dark environment, and protected from direct sunlight. Keep the container closed and open it only before use, following supplier instructions.

10. What is the bulk density of AUROlite™ Au/TiO₂?
The supplier's technical information reports a bulk density of approximately 0.85–0.95 g/mL.