糠

The results given by barbituric acid method were more accurate.

在杂质中甲基糠醛是糠醛的同系物，酮类和醛

The volume ratio of furaldehyde to acetic anhydride is 1∶2; the mole ratio of furaldehyde with anhydrous potassium carbonate is 1.00∶0.54. The best phase transfer catalyst is PEG1000, the mass ratio of PEG1000 with furaldehyde is 4.3%, the reaction time is 11 min, the reaction power of microwave is 260 W. The yield ofα-furanacrylicacid is up to 72.3% under these reaction conditions.

研究结果表明：在微波辐射功率为260 W、微波反应时间为11 min、以聚乙二醇1 000(PEG1000)为相转移催化剂，糠醛与乙酐的体积比为1∶2，糠醛与无水碳酸钾的量比为1.00∶0.55时，α-呋喃丙烯酸的产率为72.3%。

A novel furan resin was synthesized by polycondensation between furfuralcohol and furfural.

用糠醇和糠醛缩聚制备了新型呋喃树脂。

To furfuryl alcohol, environmental-friendly non-chrome catalysts are taken as dominant aspect.

综述了糠醛加氢制备糠醇及2–甲基呋喃催化剂的近期研究进展。

Two skeleton nickel catalysts A and B were prepared at 50 ℃ and 90 ℃ respectively and hydrogenation of furfuryl alcohol to tetrahydrofurfuryl alcohol was studied with the catalysts under different reaction conditions.

研究了以骨架镍为加氢催化剂，以糠醇为原料制备四氢糠醇。在中温和高温下制备了两种骨架镍催化剂A和B，研究了不同的反应条件对两种骨架镍催化剂的影响，确定了最佳反应条件。

It is found that conversion of furfuryl alcohol was higher than 99%,and THFA yield and selectivity achieved or were close to 97%by using catalyst Ⅱ with a small quantity of promoters.

对于含少量助剂的镍催化剂Ⅱ，在393 K、4.0 MPa和空速0.25 h\+\{-1\}时，糠醇转化率可达99%以上，四氢糠醇收率和选择性都达到或接近97%。

It is characterized in that: it uses furfuryl alcohol as raw material, via catalyst to polymerize the poly-furfuryl alcohol to be plated on porous support to form a coat; than drying can carbonizing to prepare compound carbon film.

其特征在于以是以糠醇为原料，在催化剂的作用下聚合成聚糠醇后直接在多孔支撑体上涂覆成膜，经干燥、炭化制备出复合炭膜。

Kebony stops wood from rotting by placing it in a vat containing a substance called furfuryl alcohol, which is made from the waste left over when sugarcane is processed.

Kebony公司首先把木材放入盛有一种被称作糠醇的物质的容器中以防止其腐烂，这种糠醇由甘蔗加工产生的废料生产而成。

Five Co-B amorphous alloy catalysts were prepared by chemical reduction in different media, including pure water and pure ethanol as well as the mixture of ethanol and water with variable ethanol content. Their catalytic properties were evaluated using liquid phase furfural hydrogenation to furfuryl alcohol as the probe reaction.

采用化学还原法在不同介质中制备了5种Co-B非晶态合金催化剂，反应介质包括水、乙醇以及不同乙醇含量的乙醇－水混合溶液，并以液相糠醛加氢制备糠醇为探针反应考察了其催化性能。

The THFA yield and selectivity were 2.0%higher than those by using catalyst Ⅰ without promoter,3.0%higher than those by using Raney nickel catalyst under the same reaction conditions and furfuryl alcohol conversion.

在相同反应条件和糠醇转化率条件下，四氢糠醇收率和选择性均比没有助剂的镍催化剂Ⅰ高2.0%，比骨架镍催化剂高3.0%。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失