The hydrogenation result show that SBS copolymer has a hydrogenation degree of polybutadiene phase more than 98%, and polystyrene phase less than 2% when reaction temperature 55～65℃, pressure more than 25kg/cm~2, Ni concentration 0.

The results show that its hydrogenation degree could be determined in 30 minutes at room temperature with good reproducibility.

The hydrogenation degree of diene in SBS is more than 98%,and the hydrogenation degree of styrene in SBS less than 2%.

The effect of the addition methods for hydrogen peroxide,the amoun t of boric acid and hydrazine hydrate,reaction temperature and reaction time on the degree of hydrogenation of NBR latex was investigated.

This paper gives an account about the status-quo of the research on coal hydrogenation both in China and abroad and also analyzes the mechanism of moderate hydrogenation of coal.

According to moderate hydrogenation,Shenhua coal which is low rank and none caking ability can converse to product with high caking ability,what\'s more,the oxygen in the raw coal was better removed,and the heat of the product was improved.

Influence of organic nitrogen compounds on deep hydrodesulfurization(HDS);

This paper is a review on the development of deep hydrodesulfurization catalysts in three aspects: the research and improvement of carrier,the upswing of common catalyst and the application of new material.

Developments in researches for supports of catalysts used in deep hydrodesulfurization of diesel oil,including oxide supports,composite oxide supports,acidic supports,carbon materials etc.

This paper introduces the precise determination of total nitrogen in petroleum ointment drastic hydrogen denitrifying process.