Biomass can be regarded as a promising alternative energy source for petroleum. The key to convert biomass into important energy materials and basic platform compounds is to convert cellulose, an important component of biomass, into glucose by directional hydrolysis.

The traditional method of preparing tungsten carbide-titanium carbide solid solution is to use industrial titanium dioxide and WC as raw materials, carbon black as reducing agent, mix with ball mill, and react in graphite tube electric furnace at the temperature of 2000-2300 ℃. The preparation method has the following shortcomings: first, the ball mill has low ball milling efficiency, mainly mixing effect on raw materials and little crushing effect. Second, the high reaction temperature makes the sintering growth of the prepared tungsten carbide-titanium carbide solid solution obvious.

White LED is a new solid-state lighting electric light source (SSL). Its principle and structure are different from those of previous vacuum electric light sources such as incandescent lamp and fluorescent lamp. SSL light source has many advantages, especially high light efficiency, energy saving, long life and pollution-free. It has great application value and prospects.

SCR denitrification technology has the advantages of high denitrification efficiency, over 90%, good selectivity and reliable technology. Catalyst is the core of SCR denitrification technology. At present, the commonly used SCR denitrification catalyst is based on titanium dioxide as carrier, V₂O₅ as active component, WO₃ or MoO₃ as structural promoter. The activity of catalyst directly determines the efficiency of denitrification.