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chemistry partner

Catalyst Detoxification Service

Catalyst Detoxification Service

Your Preferred Catalyst Partner

Alfa Chemistry Catalysts

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The catalyst loses its activity due to various factors in use, and one of the most important factors is poisoning. No matter how active the catalyst is at the beginning of the operation, if its deactivation rate is faster than expected, then the performance of the device will be affected and the profitability will decrease accordingly. Alfa Chemistry Catalysts can provide customers with catalyst detoxification solutions to help maintain the time of catalyst activity and reduce production and maintenance costs.


  • A major cause of premature catalyst deactivation is the impurities in various raw materials. The content of nickel, vanadium, iron, silicon, arsenic, phosphorus, and sodium in the raw materials often reaches ppm or even ppb levels, and its impact on downstream catalysts may be devastating.
  • With our expertise in pollution control, our leading poison protection catalyst in the market, and our mature protection strategy, can help you greatly reduce the impact of impurities in the raw material mixture and increase profits.
  • Alfa Chemistry Catalysts can provide a series of high-efficiency catalyst protective agents, including arsenic protective agents, chlorine protective agents, nickel and vanadium protective agents, sulfur protective agents, etc. At the same time, with decades of experience in the field of grading and protecting catalysts, Alfa Chemistry Catalysts has an in-depth understanding of the optimal catalyst shape and porosity. When faced with the difficult problems such as phosphorus corrosion, we can also provide your reactor with effective Protect.

Application Scenarios

  • Arsenic removal
  • Arsenic has traditionally been regarded as a serious catalyst poison. Compared to other pollutants, arsenic is a real poison because it forms NiAs or CoAs, which actively titrates the active catalytic sites.

  • Chlorine removal
  • The chlorine in the raw materials can poison downstream catalysts or fouling equipment, and can pose a major threat to the productivity of ammonia and hydrogen production plants.

  • Removal of nickel and vanadium
  • Nickel and vanadium are commonly found in heavier hydrocarbon fractions, such as vacuum gas oil (VGO), and are less in heavy coking gas oil, but especially in deasphalted oil (DAO). When nickel and vanadium are deposited on the catalyst, they can clog the pore system, thereby deactivating the catalyst.

  • Phosphorus removal
  • Phosphorus is often added to crude oil as a corrosion inhibitor and is commonly found in regenerated raw materials. It can block the passage to the inside of the catalyst and inhibit the hydroprocessing catalyst. For renewable raw materials, fast-reacting phospholipids can also cause a pressure drop.

  • Silicon removal
  • When silicon contaminates the main catalyst, it will accelerate the deactivation and shorten the cycle time.

  • Desulfurization
  • Operating at a lower temperature can significantly reduce the operating costs of the refinery, but the low operating temperature will have a negative impact on the saturation capacity of traditional zinc oxide sulfur absorbents.

※ Please kindly note that our services are for research use only.

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