Welcome to Henan J&D Chemical Co.,Ltd.
The Principle of Hydrodewaxing of Lubricating Oils
Classification: Company News
Apr 03,2026
The Principle of Hydrodewaxing of Lubricating Oils
Hydrodewaxing of lubricating oils can generally be achieved through two pathways: catalytic dewaxing and isomerization dewaxing. Catalytic dewaxing technology, in the presence of hydrogen and a selectively acting shape-selective molecular sieve catalyst, utilizes the unique pore structure and appropriate acidic centers of the molecular sieve to selectively crack high-pour-point n-alkanes and isoalkanes with short side chains in the feedstock oil into gaseous and low-pour-point hydrocarbon molecules within the molecular sieve pores, thereby lowering the oil's pour point or cloud point. Therefore, it is also known as selective catalytic hydrocracking dewaxing.
The basic principle of isomerization dewaxing is to isomerize high-pour-point n-alkanes into low-pour-point branched alkanes under the action of a specialized molecular sieve catalyst. In other words, by using a bifunctional catalyst with a special pore structure, long-chain n-alkanes in the wax component are isomerized into single-side-chain isoalkanes, and polycyclic cycloalkanes are hydrogenated and ring-opened into monocyclic cycloalkanes with long side chains, thereby reducing the pour point of the lubricating oil and improving its low-temperature fluidity.
Previous:
Related Blog
Contact
E-mail :
info@jdlubricant.com
Tel：
+86 16639322618
Address：Room 509, 5th Floor, Xulong Building, Northeast corner of Jingkai Road and Shengli Road, Hualong District, Puyang City, Henan Province
Contact Us
Room 509, 5th Floor, Xulong Building, Northeast corner of Jingkai Road and Shengli Road, Hualong District, Puyang City, Henan Province
Follow Us:
