Influence of some parameters on the ethylation of toluene over modified zeolites

1、

Ethylation selectivity, was affected by strength of surface acid sites, location of acid sites and pore structure.

乙基化的选择性则与催化剂的表面酸强度、酸性中心位置和孔道结构等因素有关。

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2、

The effect of toluene on ethylation of cellulose was investigated.

本文研究了甲苯在纤维素乙基化过程中的影响。

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3、

Results showed it was possible to recovery scheelite from tailings of molybdenum flotation in Luanchuan.

研究表明,采用常温浮选、精选加温的工艺流程从栾川浮钼尾矿中回收白钨已成为可能.

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4、

Variation rule of Slag amount during scheelite direct alloying is worked out by theoretical calculation.

通过理论计算分析了白钨矿直接合金化过程中的渣量变化规律.

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5、

Ultravioletspectrumspectrum and flotation solution chemistry were studied of scheelite and benzoylhydroxamic acid.

研究了天青石精矿复分解法制备碳酸锶的工艺及溶液化学作用机理.

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6、

The cost is about sixteen thousand dollars for the one hundred days semester.

百日学期的费用大概为一万六千美元.

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7、

A fur cap with earflaps is available for cold weather.

带护耳的棉帽可在冬季使用.

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8、

Objective : To observe the efficacy of MEBO in treating residual wounds after skin grafting.

目的: 观察MEBO治疗烧伤植皮术后残余创面疗效.

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9、

Objective: To treat chronic dacryocystitis by rebuild the lacrimal passage with skin grafting and dacryocystorhinostomy.

目的: 研究用泪囊鼻腔造口植皮术重建泪道,以治疗慢性泪囊炎.

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10、

This treating process is quite different from dry therapy with escharetomy and skin grafting.

这与传统的干燥疗法以及切(削)痂植皮疗法,有着本质的差别.

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11、

Oh! This one is skin grafting!

噢! 这是一盘关于皮肤移植的!

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12、

The statistical analysis by response surface methodology also shows that choline chloride and N, N-dimethyl acetamide exhibited a positive cooperative effect on mildiomycin biosynthesis.

响应曲面分析结果进一步证实了氯化胆碱和N，N-二甲基乙酰胺对米多霉素生物合成具有协同促进作用。

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13、

A two-step reaction of macroporous polyvinyl chloride resin with ethylenediamine and acetic anhydride gave the spherical polyvinyl acetamide chelate resin.

本文以大孔聚氯乙烯树脂、乙二胺和乙酐为原料，两步反应合成聚乙烯乙酰胺螫合树脂。

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14、

Synthesis of N-( 2-methoxy-5-nitrophenyl) Acetamide

N-（2-甲氧基-5-硝基苯基）乙酰胺的合成

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15、

Thermodynamics Study on Extraction of pd ( ii) with n, n-di ( 1-methyl heptyl) acetamide

N，N（二甲庚基）乙酰胺萃取钯的热力学

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16、

Study on the equilibrium and coordination compound of iron(ⅲ) extraction with n, n-di ( 1-methylheptyl) acetamide in hydrochloric acid

N，N-二（1-甲基庚基）乙酰胺在盐酸介质中对铁（Ⅲ）的萃取平衡及其配合物的研究

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17、

At present, the demand of N, N-dimethyl acetamide consumption from the domestic acrylic fiber industry and spandex industry accounts for the most part.

目前，国内的腈纶和氨纶行业对N，N-二甲基乙酰胺的消耗需求占主要部分。

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18、

N-vinyl-N-methyl-acetamide was synthesized from N-methyl acetamide and vinyl acetate with potassium hydroxide as catalyst.

以N-甲基乙酰胺、醋酸乙烯酯为原料，以氢氧化钾为催化剂合成了N-乙烯基-N-甲基乙酰胺。

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19、

Kinetic studies on the solvent extraction of phenol with n, n-di ( 1-methyl-heptyl)-acetamide

N，N-二（1-甲基-庚基）乙酰胺萃取苯酚的动力学研究

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20、

Synthesis of n-( 2-heptadecyl-2-imidazolinyl) ethyl acetamide

N-（2-十七烷基-2-咪唑啉）乙基乙酰胺的合成

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