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Antioxidant catalyst, Crosslinked polystyrene, Sulfonic acid, H+ form
SEPLITE® CT501 Catalysis

SEPLITE® CT 501 is the big beads resin catalyst with particle size of φ5-8mm adopting a special process technology based on one-time polymerization of styrene and divinylbenzene by the sulfonation reaction. It can be used to catalyze reaction tower to meet the different requirements of reaction temperatures and separation with the advantages of strong pressure resistant, non-corrosion, non-dregs. This product performance has reached world advanced level. The features of SEPLITE® CT 501 like uniform particle size, small material resistance, super large pore size and high exchange capacity benefit the diffusion and flow rate of materials which leads to characteristics of high porosity, good strength, long service life and high catalytic activity.

SEPLITE® CT501 Catalyst Resin Key featuresand benefits:

  • Uniform particle size, small material resistance, super large pore size

  • High exchange capacity, high conversion rate, high porosity, and long catalyst lifetime

SEPLITE® CT501 Catalyst Resin Physical and Chemical Characteristics:

Ionic form H+
Functional group Sulfonic acid
Matrix Crosslinked polystyrene
Physical appearance Light yellow opaque beads
Particle size mm φ5-8
water content % 50-60%
Total capacity mmol/g ≥4.0
Shipping weight g/ml 0.66-0.78
Density g/ml 1.25-1.34
Voidage % 40-45
Compressive strength ≥110

SEPLITE® CT501 Catalyst Resin Recommended Operating Conditions:

1. SEPLITE® CT 501 is a new kind of catalyst material with features of catalytic reaction and distillation at the same time, small investment in equipment, easy using, which has obvious advantages compared with the existing catalyst packing unit and catalyst distillation bulk tower.
2. This product is especially designed for preparation of tertbutyl alcohol (TBC) by hydration of isobutene countercurrent bed. The existing columnar resin catalyst has weak points of low intensity and exchange capacity, low temperature resistant ability and easy bonding, while SEPLITE® CT 501 polymeric catalyst has the advantages of high strength, high activity, high temperature resistance and non-deformation which can make up for the insufficiency of columnar resin catalyst.
3. SEPLITE® CT 501 big beads polymeric catalyst can be applied to industrial fields like: propylene hydration, Butylene hydration, methyl synthesis, isobutene preparation by tertiary butane dehydration.


Resins should be stored in sealed containers or bags where temperature was above 0℃ in dry conditions without exposure to direct sunlight.
Do not mix ion exchange resin with strong oxidizing agents; otherwise it will cause violent reactions.
In case of eyes contact with resins, rinse eyes immediately with plenty of water, and consult a specialist. Material and samples must be disposed according to local regulations.
Dry polymers will expand when become wetted and may cause an exothermic reaction. Spilled materials may be slippery.

SEPLITE® and Monojet™ are registered trademarks of Sunresin New Materials Co. Ltd., Xi`an

  • This information is general information and may differ from that based on actual conditions. For more information about SEPLITE® resins, please contact SUNRESIN® directly.

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Sunresin Park,No.135, jinye Road, Xi’an Hi-tech Industrial Development Zone, Shaanxi-710076, China
seplite@sunresin.com +86-29-89182091
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2024 01
 Sunresin has been selected for the Hang Seng China A Specialised & Sophisticated 50 Index
On January 22, Hong Kong's Hang Seng Index Company launched the "Hang Seng China A Specialised & Sophisticated 50 Index", and Sunresin (300487.SZ) was successfully selected as a constituent stock. As of January 12, 2024, the proportion was 2.78%.
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On November 21, the Forbes Asia Best Under A Billion Forum & Awards Dinner was held in Manila, Philippines. We are proud to announce that Dr. Gao Yuejing, chairwoman of Sunresin, has been invited to attend the award ceremony and has received for the second time this honor since 2020.

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