Abstract:
A nanostructure without bulges and a method of fabricating the nanostructure are provided. The method includes forming a nanopattern on a surface of a polymer, allowing the surface of the polymer with the nanopattern to come into contact with a predetermined solvent, and applying an external stimulus to the surface of the polymer in contact with the solvent to remove bulges around the nanopattern formed during formation of the nanopattern. Accordingly, the bulges of the nanostructure where the nanopattern is formed may be removed at a low cost and in a simple manner.
Abstract:
This invention relates to a vapor phase process for preparing cyanopyrazine, in particular which is reacting 2-methylpyrazine with ammonia and oxygen over molybdenum-phosphorus oxide-based catalyst of the following formula having the high selectivity and conversion. Mo.sub.x.P.sub.y.O.sub.z.X.Y wherein, Mo is molybdenum; P is phosphorus; O is oxygen; X is ammonium ion; Y is water; and x,y and z are respectively the numbers of atoms Mo, P and O, wherein y/x is 0.01 to 5 and z is 0.01 to 10.
Abstract:
The present invention relates to a complex oxide catalyst of Bi/Mo/Fe and an oxidative dehydrogenation of 1-butene in the presence of a catalyst herein. A catalyst of the present invention is superior to the conventional Bi/Mo catalyst in thermal and mechanical stabilities, conversion and selectivity toward 1,3-butadiene, while showing a long-term catalytic activity.
Abstract translation:本发明涉及Bi / Mo / Fe的复合氧化物催化剂和1-丁烯在本文催化剂存在下的氧化脱氢。 本发明的催化剂在热和机械稳定性,转化率和对1,3-丁二烯的选择性方面优于传统的Bi / Mo催化剂,同时显示出长期的催化活性。
Abstract:
The present invention relates to a complex oxide catalyst of Bi/Mo/Fe and an oxidative dehydrogenation of 1-butene in the presence of a catalyst herein. A catalyst of the present invention is superior to the conventional Bi/Mo catalyst in thermal and mechanical stabilities, conversion and selectivity toward 1,3-butadiene, while showing a long-term catalytic activity.
Abstract translation:本发明涉及Bi / Mo / Fe的复合氧化物催化剂和1-丁烯在本文催化剂存在下的氧化脱氢。 本发明的催化剂在热和机械稳定性,转化率和对1,3-丁二烯的选择性方面优于传统的Bi / Mo催化剂,同时显示出长期的催化活性。
Abstract:
This invention relates to a solid catalyst having the following formula for preparing nitrites and its preparation, in particular which contains molybdenum and phosphorus, etc. as main component which can improve the conversion and the selectivity in case of using as a catalyst during the process for preparing a heteroaromatic nitriles.Mo.sub.x P.sub.y O.sub.z X Ywherein,Mo is molybdenum;P is phosphorus;O is oxygen;X is ammonium salt or ion;Y is water; andx,y and z are respectively a number of atom, wherein y/x is 0.01.about.5 and z is 0.01.about.10.