Ceramic Grade CMC-NH₄ | High-Performance Binder for Honeycomb Ceramics & SCR Catalysts

Product Overview

Ammonium Carboxymethyl Cellulose (CMC-NH₄) is a specialty cellulose derivative developed for high-performance ceramic processing and SCR denitration catalyst manufacturing. It is produced through controlled chemical modification of purified cellulose and supplied as a white to slightly yellow, odorless and tasteless powder.

CMC-NH₄ readily disperses and dissolves in cold water to form a uniform, transparent and viscous solution. It provides excellent binding, thickening, dispersion, suspension, film-forming and water-retention properties, making it particularly suitable for extrusion-based ceramic manufacturing.

Its ammonium-based structure is designed to minimize the introduction of undesirable alkali-metal residues during thermal treatment, making it an advantageous alternative to conventional sodium-based CMC in applications where low ash and controlled catalyst composition are critical.

Molecular Formula: C₈H₁₅O₇N

Key Product Advantages

• High binding strength — improves green body strength during extrusion and handling

• Low ash residue — helps minimize inorganic residues after calcination

• Excellent water-soluble rheology — provides stable viscosity and processability

• Good dispersion performance — promotes uniform distribution of ceramic powders

• Improved extrusion behavior — supports smooth and consistent honeycomb extrusion

• Excellent green strength — reduces cracking, deformation and breakage during handling

• Alkali-metal-free formulation — particularly suitable for SCR catalyst applications

• Consistent batch performance — helps improve production stability and finished-product yield

Main Applications

1. Honeycomb Ceramic Extrusion

CMC-NH₄ functions as an effective organic binder and rheology modifier in honeycomb ceramic extrusion. It can improve the plasticity and cohesiveness of ceramic formulations while providing sufficient green strength for extrusion, cutting and subsequent handling.

Typical applications include:

• SCR catalyst honeycomb substrates

• Cordierite honeycomb ceramics

• Ceramic catalyst carriers

• Automotive exhaust after-treatment substrates

• Industrial ceramic extrusion products

2. SCR Denitration Catalysts

CMC-NH₄ is especially suitable for SCR (Selective Catalytic Reduction) denitration catalyst manufacturing, where the purity and ash characteristics of the binder are important.

Compared with conventional sodium-based CMC, CMC-NH₄ can help reduce the introduction of alkali-metal residues during calcination. This makes it suitable for formulations where alkali-metal contamination may adversely affect catalyst activity and durability.

It provides:

• Strong green-body cohesion

• Low residual ash after firing

• Good extrusion performance

• Stable slurry rheology

• Improved dimensional integrity

• Compatibility with high-performance SCR catalyst formulations

3. Advanced Ceramic Processing

Beyond SCR catalysts, CMC-NH₄ can be used as a binder, thickener and processing aid in selected ceramic formulations where controlled thermal decomposition and low inorganic residue are required.

Potential applications include:

• Advanced ceramics

• Electronic ceramics

• Ceramic membranes

• Porous ceramic materials

• Specialty ceramic components

Product Specification

* Viscosity measured using a B-type viscometer in a 1% aqueous solution.

Note: Specifications can be adjusted according to the customer's ceramic formulation, extrusion process and application requirements.

Why Choose CMC-NH₄ for Ceramic Extrusion?

For honeycomb ceramic and SCR catalyst manufacturers, binder selection directly influences extrusion stability, green strength, drying behavior, firing characteristics and final product quality.

CMC-NH₄ offers a balanced combination of binding performance, rheological control and low ash residue, helping manufacturers optimize processing while maintaining consistent product quality.

For applications requiring strict control of alkali-metal contamination, CMC-NH₄ provides a practical alternative to conventional sodium carboxymethyl cellulose.

Company Profile

Shanghai Prior Chemical Scientific and Technical Co., Ltd.

Established: 2016
Business Type: Specialty Chemicals & Chemical Manufacturing

Core Products

• CMC-NH₄ for SCR catalysts and ceramic applications

• Hydroxyethyl Cellulose (HEC)

• Hydroxypropyl Methyl Cellulose (HPMC)

• Ethyl Cellulose (EC)

• Chlorinated Polypropylene (CPP)

• N-Butyryl Chloride

• 2-Ethylhexyl Nitrate

• Red Base KD

• Integrated Nail Fasteners

We focus on supplying specialty chemicals for ceramics, SCR denitration, construction chemicals, coatings and industrial applications, with an emphasis on consistent quality, technical support and customized specifications.

Customized Grades Available

Different ceramic formulations require different binder characteristics. We can discuss customized specifications based on:

• Target viscosity

• Degree of substitution

• Ash content

• Moisture content

• Solution concentration

• Extrusion equipment

• Ceramic powder system

• Firing temperature

• Required green strength

Customers are welcome to provide their existing formulation or technical requirements for product matching and evaluation.

Sample & Order Process

1. Send your inquiry with product requirements and application details.

2. Technical evaluation based on your formulation and processing conditions.

3. Receive quotation and specification sheet.

4. Sample testing for laboratory or pilot-scale evaluation.

5. Technical confirmation and product approval.

6. Bulk production and shipment.

Typical Lead Time

• Samples: 7–10 working days

• Bulk orders: Approximately 7–20 working days, depending on quantity and customized requirements

FAQ

Q1: Are you a manufacturer or trading company?

A: Shanghai Prior Chemical Scientific and Technical Co., Ltd. specializes in specialty chemicals and related manufacturing activities. We provide CMC-NH₄ together with technical support, specification matching and customized solutions for industrial applications.

Q2: What is CMC-NH₄ mainly used for?

A: CMC-NH₄ is mainly used as a binder and processing aid in SCR denitration catalysts, honeycomb ceramic extrusion and other advanced ceramic applications. It can improve green strength, extrusion stability and formulation consistency while providing low ash residue after firing.

Q3: What is the difference between CMC-NH₄ and conventional CMC?

A: The key advantage is the ammonium-based counter-ion. CMC-NH₄ is designed to minimize alkali-metal residues during thermal treatment, making it particularly suitable for SCR catalyst and ceramic applications where alkali-metal contamination needs to be controlled.

Q4: Can you provide samples?

A: Yes. Samples of up to 500 g can be provided for evaluation. The sample itself can be supplied free of charge, while shipping costs are normally borne by the buyer.

Q5: Can you provide customized specifications?

A: Yes. Product specifications can be discussed according to your formulation, viscosity requirements, extrusion process, ceramic powder system and firing conditions.

Q6: What are your payment terms?

A: Standard payment terms can include T/T and L/C at sight. Specific terms can be discussed according to order quantity, customer requirements and cooperation conditions.

Q7: How do you ensure product quality?

A: We implement quality control throughout production and shipment, including raw-material control, process monitoring and finished-product inspection. Technical specifications can be confirmed before bulk production to ensure consistency with customer requirements.

Request a Quote

For a quotation or technical evaluation, please provide:

• Product: CMC-NH₄

• Application: SCR catalyst / honeycomb ceramic / other

• Required viscosity

• Required ash content

• Estimated annual or order quantity

• Destination country/port

• Current binder or formulation, if available

Send us your requirements and we can recommend a suitable CMC-NH₄ grade and provide a technical specification, sample and quotation for evaluation.