in the product solution at the end period. methyl formate and dimethylamine are controlled at equal molar feeding.

1、

the results showed that the selectivity for dimethylamine was over 60% at the methanol conversion of 98.5%.

结果表明：该催化剂具有优良的转化活性和二甲胺选择性。

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2、

development of a room temperature curing agent, metaphenylene dimethylamine polycondensate, for epoxy resin

环氧树脂室温固化剂间苯二甲胺缩聚物的研制

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3、

it shows that self-made catalyst nahm has more higher dimethylamine selectivity than others.

结果表明：自制NaHM催化剂对二甲胺具有更高选择性。

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4、

study on the synthesis of n, n-dimethylformamide from methyl formate and dimethylamine

甲酸甲酯与二甲胺合成二甲基甲酰胺的研究

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5、

study on the new technology for recovery of dimethylamine from dmf distillery wastewater in tannery factories

合成革厂DMF蒸馏废水中回收二甲胺的新工艺研究

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6、

determination of ammonia, dimethylamine and trimethylamine in the air by ion chromatography

离子色谱法同时测定空气中的氨、二甲胺、三甲胺

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7、

molecular sieve catalyst for high proportion dimethylamine

高比例二甲胺分子筛催化剂

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8、

the steam treated mordenite for selective catalytic synthesis of dimethylamine

用水蒸汽处理丝光沸石选择性催化合成二甲胺的研究

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9、

effect of pretreatment on catalytic performance of natural mordenite for the synthesis of dimethylamine

预处理对天然丝光沸石合成二甲胺催化性能的影响

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10、

preparation and reactivity of the catalysts for selective synthesis of dimethylamine

选择性合成二甲胺催化剂的制备和反应性能

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11、

effects of different elements on the performances of copper based catalysts for disproportionation of dimethylamine

铜基催化剂中助组分对二甲胺歧化性能的影响

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12、

catalyst and technology for synthesizing dimethylamine with high selectivity

高选择性合成二甲胺催化剂中试研究

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13、

treatment of the dimethylamine wastewater by complex extraction and ion-exchange

络合萃取法及离子交换法处理二甲胺废水的研究

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14、

chromatographic analysis for condensation products of acetic acid and dimethylamine

醋酸与二甲胺缩合产物的气相色谱分析

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15、

study of the synthetic method of alkyl dimethylamine oxide

十二烷基二甲基氧化叔胺合成方法的探索

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16、

study on the separation of low concentration dimethylamine from wastewater of synthetic leather industry

合成革工业废水中低浓度二甲胺的分离研究

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17、

influence factors of removal of dimethylamine from wastewater by air stripping

空气吹脱法脱除废水中二甲胺的影响因素研究

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18、

topics of study include the biology and psychology of aging, dependent care, public policy, and more.

学习的内容包括老年人的生理和心理，亲属照顾和公共政策等。

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19、

and to optimize the physical, emotional, developmental, and mental health status of children placed into dependent care.

和优化的身体，情感，发展和心理健康状况的儿童置于依赖护理。

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20、

proposes to increase the child and dependent care tax credit.

建议增加儿童和家属照管的税收优惠。

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