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The invention discloses a mobile terminal and a shooting light compensation method thereof. The method comprises the steps as follows: when a front camera is used for shooting, ambient light is collected; to-be-compensated color light and compensation intensity of the color light are determined according to color light contained in the ambient light and the intensity of the color light; a set area of a display screen of the mobile terminal emits the to-be-compensated color light with compensation intensity, so that the display screen performs light compensation on a shot object. With the adoption of the method, the light compensation color and intensity of the display screen are determined according to the ambient light, the effect of the camera is reduced to the best, and the shooting quality is improved.

The invention relates to a catalyst for preparing gamma-butyrolactone by gaseous phase dehydrogenation of 1, 4-butanediol under normal pressure and a preparation method thereof. The catalyst is composed of CuO, ZnO, Al2O3 and SiO2, and the unreduced catalyst is prepared from the following ingredients by weight percentage: 30-60% of CuO, 15-50% of Zn, 5-25% of Al2O3 and 10-30% of SiO2. The grain diameter of the catalyst is phi 5*5mm, and the catalyst is easy to restore, and has high activity and high selectivity, and long service life under a reaction process condition; the conversion rate of 1, 4-butanediol is greater than or equal to 99%, and the selectivity of the 1,4-butanediol for generating gamma-butyrolactone is greater than or equal to 96.5%.

The invention discloses a preparation method of a composite oxide carrier. A composite oxide gel adopted in the method of the invention is obtained by the steps of: first preparing an aluminum hydroxide sol and a water solution containing a group IVB metal complex, then mixing the sol and the water solution, adding dropping a hydrolysis promoter so as to obtain a mixed precipitate, which is then subjected to aging, washing, filtering and drying. The composite oxide gel obtained by the method can make most of group IVB metal oxides distributed on an alumina surface so as to weaken influence onan alumina pore structure, enhance the catalysis assisting effect of group IVB metal oxides, and improve the pore structure and surface performance of the composite oxide carrier. Therefore, the vulcanizing property of a catalyst with the carrier of the invention can be improved, and loaded active metals are easy for reduction.

The invention discloses a BOPP anti-rust adhesive tape. The BOPP anti-rust adhesive tape is composed of a BOPP plastic film and anti-rust glue water, has a low viscidity, and is applied to product adhesion, wherein the contact surface is capable of acting an effective anti-rust effect on a metal product. The preparation method is a method of adopting a high-voltage corona at first, and then coating, thus the BOPP has high tensile resistance and waterproofness, as well as can protect metal from the wears generated by packaging and transportation, and prevent the metal oxidation phenomenon caused by water vapour permeation influence; moreover, the anti-rust adhesive tape is designed to be low-viscidity and is convenient to be removed without a residual adhesive phenomenon on the surface of the metal, thus easily restoring the cleanliness of the surface of the metal. The BOPP anti-rust adhesive tape is capable of being applied to metal rust prevention, efficient in anti-rust and antioxidant effects, and capable of effectively combining adhesive tape packaging with the double effects of rust prevention and corrosion resistance. The preparation method disclosed by the invention is applicable to preparation of a BOPP anti-rust adhesive tape, and the BOPP anti-rust adhesive tape is further applied to metal rust prevention.