查询词典 aldehyde ammonia

The effect of methanol, formic acid and aqueous ammonia as nucleophiles on the ring cleavage of 1 was investigated.

8%文献值，首次采用低碳液态醇实现 1 的开环反应，产物为 FOX-7。

The hollow Ni2 microspheres were prepared via the hydrothermal reaction of NiCl2 with aqueous ammonia at 140 ℃ for 12 h.

采用X射线衍射仪、扫描电镜和透射电子显微镜对产物进行表征，并在室温下测试了它的磁学性能，结果表明， Ni2空心微球的直径约为3～4 μm，它是由尺寸1.1～1.3 μm左右的六方相结构的Ni2纳米片组装而成； NiO空心微球是由立方相纳米片和多孔纳米片组装而成，它具有弱的铁磁性，其矫顽力为583 Oe，剩余磁化强度为0.213 emu/g。

It was found that with the Ni-Zr-Ce/Al2O3 catalyst prepared in present work the production of aniline from benzene, hydrogen peroxide and aqueous ammonia could be realized under mild conditions, that is, at about 50 °C and under atmospheric pressure, and the selectivity of aniline is much higher than that of phenol.

发现在常压、50 ℃的温和条件下，该催化剂对苯、氨水与 H_2O_2直接氧化胺化生成苯胺有较好活性，并且其对苯胺的选择性远远大于对苯酚的选择性。

The ZSM-5 zeolite sieve was synthesized using aqueous ammonia and EDA as template agent.

利用氨水和乙二胺等为模板剂合成了ZSM-5沸石分子筛，研究了合成温度和时间对分子筛合成的影响。

A series of Ni-V/γ-Al2O3 catalysts were prepared and used in the one-step synthesis of aniline from benzene, hydrogen peroxide, and aqueous ammonia and/or urea.

设计并制备了Ni-V/γ-Al2O3催化剂，研究了其上苯用过氧化氢氧化氨化一步直接合成苯胺的性能和不同氨基源对合成苯胺的影响。

16Nm Mn-Zn ferrite nanoparticles were synthesized by a hydrothermal precipitation approach using metal sulfate solution and aqueous ammonia.

以金属离子的硫酸盐溶液和氨水溶液为原料，采用水热法制备了粒径为6~16nm的锰锌铁氧体纳米粒子。

As for color, or high-level material of the clothes, not to use acetic acid to wash Oh, because acetic acid has bleaching effect, aqueous ammonia can be use to wipe.

至于有颜色或高级质料的衣服，则不要用醋酸来洗哦，因醋酸有漂白作用，可改用阿摩尼亚水溶液来擦拭。

The effect of Tween 80 addition, enzyme loading and substrate concentration on the re-adsorption of cellulases, which hydrolyzed the corncob after the pretreatment by soaking in aqueous ammonia, was studied in this paper.

论文通过实验方法，考察了重吸附法回收纤维素酶中的一些因素（表面活性剂浓度、加酶量和底物浓度）对回收利用效果的影响规律，得到了较优的工艺参数范围，对于解决纤维素酶的回收利用有一定参考价值。

The effects of solvent type,concentration of the aqueous ammonia on the yields of target compounds were studied. The different results between 2,6-diamino-3,5-dinitropyridine (and 2,6-diamino-3,5-dinitropyridine-1-oxide) and 3-nitropyridien were analyzed.

探讨了溶剂类型、氨水浓度等反应条件对目标化合物产率影响，并讨论了2，6-二氨基-3，5-二硝基吡啶(2，6-二氨基-3，5-二硝基吡啶-1-氧化物)氧化胺化反应结果与3-硝基吡啶不同的原因。

The present thesis deals with the study of the direct oxy-amination of benzene to aniline with aqueous ammonia using hydrogen peroxide as the oxidant under mild reaction conditions (low temperature and atmospheric pressure).

本文采用苯为起始原料，以氨水为氨基源，过氧化氢为氧化剂，在温和条件下研究了由苯直接氧化氨基化合成苯胺的反应。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。