niobic

常見例句

• A series of niobic acids at different calcination temperatures was prepared.
  在不同焙燒溫度下制備了一系列固體鈮酸催化劑。
• A new catalyst, niobic acid, was used for the synthesis of di 2 ethylhexyl maleate with yield of 86.
  研究了用新型催化劑鈮酸催化合成馬來酸二辛酯的工藝。
• Using niobic acid as catalyst, cyclohexane as dehydrant, benzyl propionate was synthesized based on propionic acid and benzyl alcohol.
  摘要以鈮作催化劑，環(huán)己烷為帶水劑，用丙酸和苯甲醇直接合成了丙酸芐酯。
• Niobic acid and compounds containing niobium are applied in a wide range of catalysis fields for their unique acidic property and thermal stability.
  摘要鈮酸和含鈮化合物獨(dú)特酸性和熱穩(wěn)定性，廣泛的應(yīng)用催化領(lǐng)域中。
• Niobic acid as a solid catalyst can be directly applied in the hydrolysis, esterification, condensation and alkylation reaction etc.
  鈮酸可直接作為固體催化劑，應(yīng)用于水解、酯化、縮合、烷基化等反應(yīng)中；
• Using liquid-phase esterification as a probe-reaction the catalytic activity of niobic acid on the synthesis of ethyl propionate was studied.
  首次以丙酸與乙醇的酯化反應(yīng)為探針反應(yīng),探索了鈮酸液相催化合成丙酸乙酯的適宜條件。
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